/* ============ tokens ============ */
:root{
  --bg:#f7f4ee; --panel:#fffdf8; --panel-2:#f2ede4; --ink:#1e1b17; --ink-2:#3a352e;
  --muted:#7a7367; --line:#e7e0d3; --line-2:#d9d0bf;
  --brand:#b23a2f; --brand-2:#8e2c23; --brand-soft:#f6e6e2;
  --green:#2f6f63; --green-soft:#e2efe9; --gold:#b8862b;
  --shadow:0 1px 2px rgba(40,30,20,.05),0 8px 24px -12px rgba(40,30,20,.18);
  --lv1:#d9e9e3;--lv2:#a9cec3;--lv3:#6fa898;--lv4:#2f6f63;
  --radius:16px; --radius-sm:10px;
  --side-w:272px;
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --serif:"Noto Serif SC","Songti SC",Georgia,"Times New Roman",serif;
}
[data-theme="dark"]{
  --bg:#131210; --panel:#1b1916; --panel-2:#232019; --ink:#f0e9dd; --ink-2:#d8d0c2;
  --muted:#9b9284; --line:#2e2a24; --line-2:#3b362d;
  --brand:#e0725f; --brand-2:#f08d7c; --brand-soft:#2c1c18;
  --green:#77b7a7; --green-soft:#1b2a26; --gold:#d9a94a;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px -14px rgba(0,0,0,.7);
  --lv1:#22332e;--lv2:#2f4a41;--lv3:#3f6457;--lv4:#77b7a7;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(circle at 12% 8%,rgba(178,58,47,.045),transparent 42%),
                   radial-gradient(circle at 88% 92%,rgba(47,111,99,.05),transparent 45%);
  background-attachment:fixed;
}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:.01em;line-height:1.3}
::selection{background:var(--brand);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:8px;border:3px solid var(--bg)}
::-webkit-scrollbar-track{background:transparent}

/* ============ layout ============ */
.side{
  position:fixed;inset:0 auto 0 0;width:var(--side-w);padding:22px 18px;
  background:var(--panel);border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:22px;z-index:30;
}
.shell{margin-left:var(--side-w);min-height:100%;display:flex;flex-direction:column}
.topbar{
  position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:12px;
  padding:14px 26px;background:var(--bg);
  backdrop-filter:blur(14px);background:color-mix(in srgb,var(--bg) 86%,transparent);
  border-bottom:1px solid var(--line);
}
.topbar-title{font-family:var(--serif);font-size:19px;font-weight:700;flex:1;min-width:0;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar-right{display:flex;align-items:center;gap:8px}
#view{padding:26px 26px 120px;max-width:1080px;width:100%;margin:0 auto;flex:1;outline:none}
.tabbar{display:none}

/* side */
.brand{display:flex;gap:12px;align-items:center}
.brand-mark{
  width:44px;height:44px;border-radius:13px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-family:var(--serif);font-size:19px;font-weight:700;
  box-shadow:0 6px 18px -8px var(--brand);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:15px}
.brand-text span{font-size:12px;color:var(--muted)}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-nav a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:11px;
  color:var(--ink-2);font-size:14.5px;transition:.18s}
.side-nav a .ico{width:18px;text-align:center;color:var(--muted);font-size:15px}
.side-nav a:hover{background:var(--panel-2);color:var(--ink)}
.side-nav a.on{background:var(--brand-soft);color:var(--brand);font-weight:600}
.side-nav a.on .ico{color:var(--brand)}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px}
.ring-wrap{position:relative;width:96px;height:96px;margin:0 auto}
.ring{width:96px;height:96px;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:8}
.ring-bg{stroke:var(--line)}
.ring-fg{stroke:var(--brand);stroke-linecap:round;stroke-dasharray:264;stroke-dashoffset:264;
  transition:stroke-dashoffset .7s cubic-bezier(.22,1,.36,1)}
.ring-label{position:absolute;inset:0;display:grid;place-content:center;text-align:center;line-height:1.1}
.ring-label b{font-size:19px;font-family:var(--serif)}
.ring-label span{font-size:11px;color:var(--muted)}
.ghost-btn{padding:9px 12px;border:1px solid var(--line);border-radius:10px;font-size:13px;color:var(--muted);
  background:var(--panel);transition:.18s}
.ghost-btn:hover{color:var(--ink);border-color:var(--line-2)}

/* ============ shared ui ============ */
.eyebrow{font-size:12px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase}
.pill{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;
  background:var(--panel-2);font-size:12.5px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.pill.brand{background:var(--brand-soft);color:var(--brand)}
.icon-btn{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;font-size:18px;
  color:var(--ink-2);transition:.18s}
.icon-btn:hover{background:var(--panel-2)}
.back{display:none}
.back.show{display:grid}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.section-title{display:flex;align-items:baseline;gap:10px;margin:30px 0 14px}
.section-title h2{font-size:19px}
.section-title span{font-size:12.5px;color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:12px;
  background:var(--brand);color:#fff;font-weight:600;font-size:14.5px;transition:.18s;
  box-shadow:0 8px 20px -12px var(--brand)}
.btn:hover{transform:translateY(-1px);background:var(--brand-2)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:var(--panel);color:var(--ink);border:1px solid var(--line);box-shadow:none}
.btn.ghost:hover{border-color:var(--line-2);background:var(--panel-2)}
.btn.small{padding:8px 14px;font-size:13px;border-radius:10px}
.empty{padding:48px 20px;text-align:center;color:var(--muted)}

/* ============ home ============ */
.hero{position:relative;overflow:hidden;padding:30px 30px 26px;border-radius:22px;
  background:linear-gradient(140deg,var(--panel) 0%,var(--panel) 55%,var(--brand-soft) 160%);
  border:1px solid var(--line);box-shadow:var(--shadow)}
.hero:after{pointer-events:none;content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,var(--brand) 0%,transparent 70%);opacity:.10}
.hero-top{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;flex-wrap:wrap}
.hero h1{font-size:clamp(26px,4.4vw,38px);margin:8px 0 6px}
.hero-sub{color:var(--muted);font-size:14px;max-width:46ch}
.hero-actions{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}
.count{display:flex;gap:26px;margin-top:26px;flex-wrap:wrap}
.count div{display:flex;flex-direction:column}
.count b{font-family:var(--serif);font-size:25px;line-height:1.1;font-variant-numeric:tabular-nums}
.count span{font-size:12px;color:var(--muted);letter-spacing:.06em}
.big-ring{position:relative;width:132px;height:132px;flex:none}
.big-ring svg{width:132px;height:132px;transform:rotate(-90deg)}
.big-ring .ring-bg{stroke:var(--line)} .big-ring .ring-fg{stroke:var(--green);stroke-dasharray:264;stroke-dashoffset:264;transition:.8s}
.big-ring .ring-label b{font-size:26px}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.mini{padding:16px 18px;display:flex;flex-direction:column;gap:4px}
.mini b{font-family:var(--serif);font-size:22px}
.mini span{font-size:12.5px;color:var(--muted)}
.phases{display:grid;gap:10px}
.phase-row{display:grid;grid-template-columns:52px 1fr auto;gap:14px;align-items:center;padding:13px 16px;
  border-radius:13px;border:1px solid var(--line);background:var(--panel);transition:.18s}
.phase-row:hover{border-color:var(--line-2);transform:translateX(2px)}
.phase-row .no{font-family:var(--serif);color:var(--brand);font-size:17px}
.phase-row .nm{font-weight:600;font-size:14.5px}
.phase-row .ds{font-size:12.5px;color:var(--muted)}
.phase-row .rg{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}

/* ============ day ============ */
.day-head{display:flex;gap:18px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap}
.day-head h1{font-size:clamp(23px,3.6vw,31px);margin:6px 0 8px}
.day-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}
.tabs{display:flex;gap:4px;margin:22px 0 18px;padding:5px;background:var(--panel-2);border-radius:14px;
  overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tabs button{flex:1;min-width:max-content;padding:9px 16px;border-radius:10px;font-size:13.5px;color:var(--muted);
  white-space:nowrap;transition:.18s}
.tabs button.on{background:var(--panel);color:var(--ink);font-weight:600;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.tabs button .n{font-size:11px;color:var(--muted);margin-left:5px}

.sched{display:flex;flex-direction:column;gap:2px}
.sched-row{display:grid;grid-template-columns:96px 46px 1fr 28px;gap:12px;align-items:center;
  padding:12px 14px;border-radius:12px;transition:.16s;border:1px solid transparent}
.sched-row:hover{background:var(--panel-2)}
.sched-row .t{font-variant-numeric:tabular-nums;font-size:12.5px;color:var(--muted)}
.sched-row .m{font-size:12px;color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}
.sched-row .task{font-size:14.5px;line-height:1.5}
.sched-row.done .task{color:var(--muted);text-decoration:line-through;text-decoration-thickness:1px}
.chk{width:26px;height:26px;border-radius:9px;border:1.5px solid var(--line-2);display:grid;place-items:center;
  font-size:14px;color:transparent;transition:.16s;flex:none}
.chk.on{background:var(--green);border-color:var(--green);color:#fff}
.sched-row:hover .chk{border-color:var(--green)}
.progress-line{height:6px;border-radius:99px;background:var(--line);overflow:hidden;margin:14px 0 6px}
.progress-line i{display:block;height:100%;background:linear-gradient(90deg,var(--green),var(--brand));border-radius:99px;
  transition:width .5s cubic-bezier(.22,1,.36,1)}
.goals{display:flex;flex-direction:column;gap:9px;margin-top:6px}
.goal{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-2)}
.goal:before{content:"◆";color:var(--brand);font-size:11px;line-height:2}

.word-tools{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:14px}
.seg{display:inline-flex;background:var(--panel-2);border-radius:11px;padding:4px;gap:2px}
.seg button{padding:6px 14px;border-radius:8px;font-size:13px;color:var(--muted)}
.seg button.on{background:var(--panel);color:var(--ink);font-weight:600;box-shadow:0 1px 2px rgba(0,0,0,.06)}
.wtable{width:100%;border-collapse:collapse;font-size:14.5px}
.wtable th{text-align:left;font-weight:500;font-size:12px;color:var(--muted);letter-spacing:.08em;
  padding:8px 10px;border-bottom:1px solid var(--line);position:sticky;top:58px;background:var(--bg);z-index:2}
.wtable td{padding:10px;border-bottom:1px solid var(--line);vertical-align:top}
.wtable tr:hover td{background:var(--panel-2)}
.wtable .w{font-weight:600;font-family:var(--serif);font-size:15.5px}
.wtable .ph{color:var(--muted);font-size:12.5px;font-family:Georgia,serif;white-space:nowrap}
.wtable .tr{color:var(--ink-2);font-size:13.5px}
.star{color:var(--gold);font-size:11px;margin-right:4px;vertical-align:2px}
.known-dot{width:9px;height:9px;border-radius:50%;background:var(--line-2);display:inline-block}
.known-dot.on{background:var(--green)}

.wcard-wrap{display:flex;flex-direction:column;align-items:center;gap:18px;padding:8px 0}
.wcard{width:100%;max-width:520px;min-height:250px;border-radius:22px;border:1px solid var(--line);
  background:linear-gradient(160deg,var(--panel),var(--panel-2));box-shadow:var(--shadow);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:34px 26px;
  text-align:center;position:relative;transition:transform .25s cubic-bezier(.22,1,.36,1)}
.wcard .wc-word{font-family:var(--serif);font-size:clamp(32px,7vw,46px);font-weight:700;letter-spacing:.01em}
.wcard .wc-ph{color:var(--muted);font-family:Georgia,serif;font-size:15px}
.wcard .wc-tr{margin-top:8px;font-size:17px;color:var(--ink-2);opacity:0;transform:translateY(6px);transition:.3s}
.wcard.flipped .wc-tr{opacity:1;transform:none}
.wcard .wc-tip{position:absolute;bottom:14px;font-size:11.5px;color:var(--muted);letter-spacing:.06em}
.wcard .wc-star{position:absolute;top:14px;right:16px;color:var(--gold)}
.wcard-actions{display:flex;gap:10px;width:100%;max-width:520px}
.wcard-actions .btn{flex:1}
.wcard-count{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}

.reading{max-width:68ch}
.reading .stage{font-size:12px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}
.reading h2{font-size:clamp(22px,3.4vw,28px);margin:6px 0 16px}
.rd-text{font-family:var(--serif);font-size:var(--read-font,19px);line-height:1.95;color:var(--ink);
  letter-spacing:.01em;white-space:pre-wrap}
.rd-lines{counter-reset:l;display:flex;flex-direction:column;gap:10px}
.rd-line{display:flex;gap:12px;font-family:var(--serif);font-size:var(--read-font,19px);line-height:1.7}
.rd-line .no{color:var(--brand);font-size:12px;font-family:var(--font);padding-top:6px;min-width:18px}
.rd-dialogue{display:flex;flex-direction:column;gap:8px;padding:16px 18px;border-radius:14px;background:var(--panel-2);
  font-family:var(--serif);font-size:var(--read-font,18px);line-height:1.7}
.rd-dialogue .sp{color:var(--brand);font-family:var(--font);font-size:12px;margin-right:8px}
.rd-tools{display:flex;gap:8px;align-items:center;margin:14px 0 20px}
.rd-tasks{margin-top:24px;padding-top:20px;border-top:1px dashed var(--line-2)}
.rd-tasks h3{font-size:15px;margin-bottom:12px}
.task-row{display:flex;gap:11px;align-items:flex-start;padding:9px 0;font-size:14.5px;cursor:pointer}
.task-row .chk{width:22px;height:22px;border-radius:7px;font-size:12px;margin-top:2px}
.task-row.done{color:var(--muted);text-decoration:line-through}

.grammar{display:flex;flex-direction:column;gap:14px}
.g-block{padding:18px 20px}
.g-block h3{font-size:14px;color:var(--brand);margin-bottom:10px;letter-spacing:.02em}
.g-block ul{margin:0;padding-left:18px}
.g-block li{margin:6px 0;font-size:14.5px;color:var(--ink-2)}
.g-ex li{font-family:var(--serif);font-size:15px}
.trap{padding:14px 16px;border-left:3px solid var(--gold);background:rgba(184,134,43,.08);
  border-radius:0 12px 12px 0;font-size:14px;color:var(--ink-2)}
.quiz-q{padding:12px 0;border-bottom:1px dashed var(--line)}
.quiz-q:last-child{border:0}
.quiz-q .q{font-size:14.5px}
.quiz-q .a{font-size:13.5px;color:var(--green);margin-top:6px;display:none}
.quiz-q.show .a{display:block}
.quiz-q button{font-size:12px;color:var(--brand);margin-top:6px}

/* ============ plan ============ */
.plan-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.day-card{padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:var(--panel);
  display:flex;flex-direction:column;gap:6px;transition:.18s;position:relative;overflow:hidden}
.day-card:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow)}
.day-card .dc-top{display:flex;justify-content:space-between;align-items:center;font-size:11.5px;color:var(--muted)}
.day-card .dc-d{font-family:var(--serif);font-size:17px;font-weight:700}
.day-card .dc-t{font-size:13px;color:var(--ink-2);line-height:1.45;height:2.9em;overflow:hidden}
.day-card .dc-b{display:flex;justify-content:space-between;align-items:center;font-size:11.5px;color:var(--muted)}
.day-card .bar{position:absolute;left:0;bottom:0;height:3px;background:var(--green);opacity:.85}
.day-card.done{border-color:var(--green)}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}

/* ============ words page ============ */
.search{display:flex;gap:10px;align-items:center;margin-bottom:16px;flex-wrap:wrap}
.search input{flex:1;min-width:180px;padding:12px 16px;border-radius:12px;border:1px solid var(--line);
  background:var(--panel);color:var(--ink);font-size:14.5px;outline:none}
.search input:focus{border-color:var(--brand)}
.wlist{display:flex;flex-direction:column}
.wrow{display:grid;grid-template-columns:26px 1fr auto;gap:12px;align-items:center;padding:12px 12px;
  border-bottom:1px solid var(--line)}
.wrow .w{font-family:var(--serif);font-size:16px;font-weight:600}
.wrow .tr{font-size:12.5px;color:var(--muted);margin-top:2px}
.wrow .tag{font-size:11px;color:var(--muted);padding:3px 8px;border-radius:99px;background:var(--panel-2)}
.more{display:flex;justify-content:center;padding:20px}

/* ============ stats ============ */
.heat{display:grid;grid-template-columns:repeat(15,1fr);gap:5px;margin-top:8px}
.heat a{display:block;line-height:0;border-radius:4px}
.heat a:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.heat i{aspect-ratio:1;width:100%;border-radius:3.5px;background:var(--panel-2);display:block}
.heat i[data-lv="1"]{background:var(--lv1)}
.heat i[data-lv="2"]{background:var(--lv2)}
.heat i[data-lv="3"]{background:var(--lv3)}
.heat i[data-lv="4"]{background:var(--lv4)}
.legend{display:flex;gap:6px;align-items:center;font-size:11.5px;color:var(--muted);margin-top:10px}
.legend i{width:11px;height:11px;border-radius:3px;display:inline-block}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}
.stat{padding:16px 18px}
.stat b{font-family:var(--serif);font-size:26px;display:block;line-height:1.2}
.stat span{font-size:12.5px;color:var(--muted)}
.danger{color:var(--brand);font-size:13px;text-decoration:underline;text-underline-offset:3px}

/* toast */
.toast{position:fixed;left:50%;bottom:90px;transform:translate(-50%,14px);background:var(--ink);color:var(--bg);
  padding:10px 18px;border-radius:999px;font-size:13px;opacity:0;pointer-events:none;transition:.25s;z-index:99}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ============ responsive ============ */
@media (max-width:900px){
  .side{transform:translateX(-100%);transition:.28s;box-shadow:0 0 60px rgba(0,0,0,.2)}
  .side.open{transform:none}
  .shell{margin-left:0}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:40;background:var(--panel);
    border-top:1px solid var(--line);padding:6px 6px calc(6px + env(safe-area-inset-bottom));
    justify-content:space-around}
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 0;
    color:var(--muted);font-size:11px;border-radius:10px}
  .tabbar a .ico{font-size:17px}
  .tabbar a.on{color:var(--brand);background:var(--brand-soft)}
  #view{padding:18px 16px 110px}
  .topbar{padding:10px 14px}
  .hero{padding:22px 20px}
  .grid-3{grid-template-columns:1fr 1fr}
  .wtable th{top:52px}
  .sched-row{grid-template-columns:74px 1fr 26px;gap:10px}
  .sched-row .m{display:none}
  .heat{grid-template-columns:repeat(10,1fr)}
  .plan-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
  .day-card .dc-t{height:auto;font-size:12px}
}
@media (max-width:560px){
  .wtable thead{display:none}
  .wtable,.wtable tbody{display:block}
  .wtable tr{display:grid;grid-template-columns:24px 1fr;gap:4px 8px;padding:11px 2px;border-bottom:1px solid var(--line)}
  .wtable td{border:0;padding:0}
  .wtable td:nth-child(1){grid-row:span 3;padding-top:3px}
  .wtable td:nth-child(3){grid-column:2;font-size:11.5px}
  .wtable td:nth-child(4){grid-column:2;font-size:13px;margin-top:2px}
}
@media (max-width:420px){
  .grid-3{grid-template-columns:1fr}
  #dayPill{display:none}
  .hero-top .big-ring{margin:0 auto}
  .tabs button{padding:8px 12px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* review quiz */
.rq{padding:6px 18px}
.rq-row{display:flex;gap:14px;align-items:baseline;padding:11px 0;border-bottom:1px dashed var(--line);cursor:pointer}
.rq-row:last-child{border-bottom:0}
.rq-w{font-family:var(--serif);font-weight:600;font-size:16px;min-width:120px}
.rq-tr{font-size:13.5px;color:var(--muted);filter:blur(6px);transition:.22s;user-select:none}
.rq-row.on .rq-tr{filter:none;color:var(--ink-2)}

/* ============ 任务卡片 / 积分 ============ */
.side-score{display:flex;align-items:baseline;gap:6px;justify-content:center;color:var(--muted);font-size:11.5px;margin-top:-4px}
.side-score b{font-family:var(--serif);font-size:20px;color:var(--ink);font-variant-numeric:tabular-nums}

.score-bar{display:flex;justify-content:space-between;align-items:flex-end;margin:2px 2px 14px}
.score-bar b{display:block;font-family:var(--serif);font-size:17px;line-height:1.2}
.score-bar span{display:block;font-size:12px;color:var(--muted)}
.score-now{text-align:right;flex:none}
.score-now b{color:var(--brand);font-size:23px;font-variant-numeric:tabular-nums}

.tasks{display:flex;flex-direction:column;gap:9px}
.task-item{display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:13px 16px;border:1px solid var(--line);border-radius:14px;background:var(--panel);transition:.18s}
.task-item:hover{border-color:var(--line-2);box-shadow:var(--shadow)}
.task-item.running{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.task-item.done{background:var(--panel-2)}
.task-item.done .ti-title{color:var(--muted);text-decoration:line-through;text-decoration-thickness:1px}
.ti-main{flex:1;min-width:0}
.ti-meta{display:flex;align-items:center;gap:9px;font-size:11.5px;color:var(--muted);margin-bottom:3px}
.ti-time{font-variant-numeric:tabular-nums}
.ti-min:before{content:"·";margin-right:9px}
.ti-title{font-size:14.5px;line-height:1.5}
.ti-actions{display:flex;align-items:center;gap:8px;flex:none}
.tbtn{padding:9px 15px;border-radius:11px;font-size:13px;font-weight:600;transition:.16s;white-space:nowrap}
.tbtn.start{background:var(--brand-soft);color:var(--brand)}
.tbtn.start:hover{background:var(--brand);color:#fff}
.tbtn.go{background:var(--green);color:#fff}
.tbtn.go:hover{filter:brightness(1.08)}
.tbtn.done{background:var(--green-soft);color:var(--green)}
.tbtn.x{background:transparent;color:var(--muted);padding:9px 8px;font-size:17px;line-height:1}
.timer{font-variant-numeric:tabular-nums;font-weight:700;color:var(--brand);font-size:14px;letter-spacing:.03em}
.pts{color:var(--gold);font-size:11px;font-weight:700;background:rgba(184,134,43,.12);padding:2px 7px;border-radius:20px;font-variant-numeric:tabular-nums}
.pts:not(.on){opacity:.5}
.rule{margin-top:26px;padding:12px 14px;border-radius:12px;background:var(--panel-2);font-size:12px;color:var(--muted);line-height:1.75}
.rule b{color:var(--ink-2)}

/* ============ 朗读 ============ */
.play{width:26px;height:26px;border-radius:50%;border:1px solid var(--line-2);background:var(--panel);
  color:var(--brand);display:inline-grid;place-items:center;font-size:9px;line-height:1;flex:none;transition:.15s}
.play:hover{background:var(--brand);border-color:var(--brand);color:#fff}
.play:active{transform:scale(.92)}
.say{cursor:pointer;display:inline-block;transition:.15s}
.say:hover{color:var(--brand);text-decoration:underline dotted;text-underline-offset:3px}
.wc-say{position:absolute;top:14px;left:16px;font-size:15px;opacity:.45;transition:.15s}
.wc-say:hover{opacity:1}
.rd-line{align-items:center}
.rd-sent{cursor:pointer;flex:1}
.rd-dline{display:flex;align-items:center;justify-content:space-between;gap:12px}
.rd-dline>span{flex:1}
.rd-paras{display:flex;flex-direction:column;gap:15px}
.rd-p{display:flex;align-items:flex-start;gap:12px;margin:0;font-family:var(--serif);
  font-size:var(--read-font,19px);line-height:1.95}
.rd-p>span{flex:1;cursor:pointer}
.rd-p .play{margin-top:7px}
.speaking{background:var(--brand-soft);box-shadow:0 0 0 4px var(--brand-soft);border-radius:5px;transition:.2s}

@media (max-width:560px){
  .task-item{flex-direction:column;align-items:stretch;gap:10px}
  .ti-actions{justify-content:flex-end}
  .tbtn.start,.tbtn.go{flex:1}
  .score-bar b{font-size:15px}
  .score-now b{font-size:20px}
}

/* 段落内逐句 */
.rd-para .sent{cursor:pointer;border-radius:4px;transition:background .15s}
.rd-para .sent:hover{background:var(--brand-soft);color:var(--ink)}
.rd-para .sent.speaking{background:var(--brand-soft);box-shadow:0 0 0 3px var(--brand-soft)}
.say,.play,.rd-sent,.sent{-webkit-user-select:none;user-select:none}
.rd-hint{font-size:12px;color:var(--muted);margin:14px 0 0}

/* ============ 测验 ============ */
body.q-open{overflow:hidden}
.qmodal{position:fixed;inset:0;z-index:100;background:rgba(20,16,12,.45);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;padding:16px;animation:fade .18s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.qbox{width:100%;max-width:560px;max-height:92vh;overflow:auto;background:var(--panel);border-radius:20px;
  border:1px solid var(--line);box-shadow:0 30px 80px -20px rgba(0,0,0,.45);animation:pop .22s cubic-bezier(.22,1,.36,1)}
@keyframes pop{from{transform:translateY(14px) scale(.98);opacity:0}to{transform:none;opacity:1}}
.qhead{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:20px 22px 12px}
.qtitle{font-family:var(--serif);font-size:19px;font-weight:700}
.qsub{font-size:12.5px;color:var(--muted);margin-top:3px}
.qx{width:34px;height:34px;border-radius:10px;font-size:20px;color:var(--muted);line-height:1}
.qx:hover{background:var(--panel-2);color:var(--ink)}
.qbar{height:4px;background:var(--line);margin:0 22px 6px;border-radius:99px;overflow:hidden}
.qbar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--green),var(--brand));transition:width .35s}
.qbody{padding:14px 22px 24px}
.qmeta{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:16px}
.qpts{color:var(--gold)}
.qask{font-size:13px;color:var(--muted);margin-bottom:14px}
.q-word{font-family:var(--serif);font-size:clamp(30px,6vw,40px);font-weight:700;text-align:center;margin:6px 0 4px}
.q-ph{text-align:center;color:var(--muted);font-family:Georgia,serif;font-size:14px;margin-bottom:10px}
.q-cn{font-family:var(--serif);font-size:clamp(20px,4.4vw,26px);text-align:center;margin:8px 0 16px;line-height:1.4}
.q-play{display:block;margin:6px auto 16px;padding:14px 22px;border-radius:14px;background:var(--brand-soft);
  color:var(--brand);font-weight:600;font-size:15px}
.qopts{display:flex;flex-direction:column;gap:9px;margin-top:16px}
.qopt{display:flex;align-items:center;gap:12px;text-align:left;padding:14px 16px;border-radius:13px;
  border:1px solid var(--line);background:var(--panel);font-size:15px;transition:.15s;color:var(--ink)}
.qopt:hover:not(:disabled){border-color:var(--brand);background:var(--brand-soft)}
.qopt b{width:24px;height:24px;border-radius:7px;background:var(--panel-2);display:grid;place-items:center;
  font-size:12px;color:var(--muted);flex:none}
.qopt:disabled{cursor:default}
.qopt.right{border-color:var(--green);background:var(--green-soft)}
.qopt.right b{background:var(--green);color:#fff}
.qopt.wrong{border-color:var(--brand);background:var(--brand-soft)}
.qopt.wrong b{background:var(--brand);color:#fff}
.qfoot{display:flex;justify-content:space-between;align-items:center;margin-top:18px;min-height:44px;gap:12px}
.qfb{font-size:13.5px}
.qfb.ok{color:var(--green)} .qfb.no{color:var(--brand)}
.qresult{text-align:center;padding:10px 4px 4px}
.qscore{font-family:var(--serif);font-size:56px;line-height:1;font-weight:700}
.qscore span{font-size:22px;color:var(--muted)}
.qscore.pass{color:var(--green)} .qscore.fail{color:var(--brand)}
.qpct{color:var(--muted);font-size:13px;margin-top:8px}
.qgain{font-family:var(--serif);font-size:26px;color:var(--gold);margin-top:12px}
.qwrong{margin-top:18px;padding:14px 16px;border-radius:12px;background:var(--panel-2);font-size:13px;text-align:left}
.qwrong b{display:block;margin-bottom:8px;font-size:12.5px;color:var(--muted)}
.qwrong span{display:inline-block;margin:3px 6px 3px 0;padding:3px 9px;border-radius:20px;background:var(--panel);border:1px solid var(--line);font-size:12.5px}
.qwrong.ok{text-align:center;color:var(--green)}

/* 测验卡片 */
.qcards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.qcard{padding:16px 18px;display:flex;flex-direction:column;gap:6px}
.qc-top{display:flex;justify-content:space-between;align-items:center;font-size:11.5px;color:var(--muted)}
.qc-tag{background:var(--panel-2);padding:2px 9px;border-radius:20px}
.qc-pts{color:var(--gold)}
.qcard h3{font-size:16px;margin-top:2px}
.qcard p{font-size:12.5px;color:var(--muted);margin:0;line-height:1.6;flex:1}
.qc-foot{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:10px}
.qc-best{font-size:12px;color:var(--muted)}
.qcard.warn{border-color:var(--brand);background:linear-gradient(160deg,var(--panel),var(--brand-soft))}

.errtable{padding:4px 16px}
.errrow{display:grid;grid-template-columns:120px 1fr auto;gap:12px;align-items:center;padding:10px 0;border-bottom:1px dashed var(--line);font-size:13.5px}
.errrow:last-child{border-bottom:0}
.errrow .w{font-family:var(--serif);font-weight:600;font-size:15px;cursor:pointer}
.errrow .tr{color:var(--muted);font-size:12.5px}
@media (max-width:560px){
  .qbox{max-height:94vh;border-radius:16px}
  .qhead{padding:16px 16px 10px}
  .qbar{margin:0 16px 4px}
  .qbody{padding:10px 16px 20px}
  .errrow{grid-template-columns:1fr auto;gap:4px 10px}
  .errrow .tr{grid-column:1/-1;font-size:12px}
}

/* ============ 沉浸式任务 ============ */
.sess{position:fixed;inset:0;z-index:110;background:radial-gradient(circle at 50% 0%,rgba(178,58,47,.18),transparent 55%),rgba(16,13,10,.72);
  backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:14px;animation:fade .2s ease}
.sbox{width:100%;max-width:620px;max-height:94vh;overflow:auto;background:var(--panel);border-radius:22px;
  border:1px solid var(--line);box-shadow:0 40px 100px -30px rgba(0,0,0,.6);animation:pop .25s cubic-bezier(.22,1,.36,1);position:relative}
.shead{display:flex;align-items:center;gap:12px;padding:18px 20px 10px}
.smascot{font-size:30px;line-height:1;transition:transform .3s}
.smascot.pop{animation:mascot .45s cubic-bezier(.22,1,.36,1)}
@keyframes mascot{0%{transform:scale(1)}40%{transform:scale(1.35) rotate(-8deg)}100%{transform:scale(1)}}
.stitlewrap{flex:1;min-width:0}
.stitle{font-family:var(--serif);font-size:18px;font-weight:700}
.ssub{font-size:12.5px;color:var(--muted);margin-top:2px}
.sx{width:34px;height:34px;border-radius:10px;font-size:20px;color:var(--muted)}
.sx:hover{background:var(--panel-2);color:var(--ink)}
.sbar{height:5px;background:var(--line);margin:0 20px 4px;border-radius:99px;overflow:hidden}
.sbar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#2f6f63,#b8862b,#b23a2f);transition:width .4s}
.sbody{padding:16px 22px 26px}
.scombo{position:absolute;left:0;right:0;bottom:14px;text-align:center;font-size:12.5px;color:var(--muted);
  opacity:0;transform:translateY(6px);transition:.25s;pointer-events:none}
.scombo.show{opacity:1;transform:none}
.scombo b{color:var(--brand);font-size:14px}
.scombo span{background:var(--brand);color:#fff;border-radius:20px;padding:1px 8px;margin-left:6px;font-size:11px}

.scard{position:relative;border-radius:20px;border:1px solid var(--line);
  background:linear-gradient(160deg,var(--panel),var(--panel-2));padding:34px 22px;text-align:center;
  min-height:230px;display:flex;flex-direction:column;justify-content:center;gap:8px;cursor:pointer;
  transition:transform .2s,box-shadow .2s;box-shadow:var(--shadow)}
.scard:hover{transform:translateY(-2px)}
.scard .ssay{position:absolute;top:12px;left:14px;font-size:18px;opacity:.55}
.scard .ssay:hover{opacity:1}
.sword{font-family:var(--serif);font-size:clamp(34px,7vw,46px);font-weight:700;letter-spacing:.02em}
.sph{color:var(--muted);font-family:Georgia,serif;font-size:15px}
.str{font-size:16px;color:var(--ink-2);opacity:0;transform:translateY(6px);transition:.25s;margin-top:6px}
.scard.flipped .str{opacity:1;transform:none}
.stip{position:absolute;bottom:10px;left:0;right:0;font-size:11px;color:var(--muted)}
.sactions{display:flex;gap:10px;margin-top:16px}
.sbtn{flex:1;padding:14px 18px;border-radius:14px;font-size:15px;font-weight:600;transition:.16s;text-align:center}
.sbtn.prim{background:var(--brand);color:#fff;box-shadow:0 10px 24px -14px var(--brand)}
.sbtn.prim:hover{filter:brightness(1.06);transform:translateY(-1px)}
.sbtn.ghost{background:var(--panel-2);color:var(--ink-2)}
.sbtn.ghost:hover{background:var(--line)}
.scount{text-align:center;font-size:12px;color:var(--muted);margin-top:12px}

.sprompt{font-size:13px;color:var(--muted);text-align:center;margin:6px 0 14px}
.scn{font-family:var(--serif);font-size:26px;text-align:center;margin:8px 0 6px}
.ssent{font-family:var(--serif);font-size:clamp(19px,4vw,23px);line-height:1.7;text-align:center;margin:14px 4px;letter-spacing:.01em}
.sread{font-family:var(--serif);font-size:var(--read-font,19px);line-height:1.95;margin:10px 0 18px;max-height:46vh;overflow:auto;padding-right:4px}
.splay{display:block;margin:12px auto;padding:13px 24px;border-radius:14px;background:var(--brand-soft);color:var(--brand);font-weight:600;font-size:15px}
.splay.big{font-size:16px;padding:15px 30px}
.splay:hover{background:var(--brand);color:#fff}
.sinput{width:100%;padding:16px 18px;border-radius:14px;border:2px solid var(--line);background:var(--panel);
  font-size:19px;font-family:Georgia,serif;letter-spacing:.02em;text-align:center;outline:none;transition:.15s}
.sinput:focus{border-color:var(--brand)}
.sinput.ok{border-color:var(--green);background:var(--green-soft)}
.sinput.no{border-color:var(--brand);background:var(--brand-soft)}
.sfb{text-align:center;min-height:24px;margin-top:10px;font-size:14px}
.sfb .ok{color:var(--green);font-weight:600}
.sfb .no{color:var(--brand)}
.sfb b{font-family:Georgia,serif;font-size:17px}

.sgtitle{font-family:var(--serif);font-size:17px;margin-bottom:10px}
.spoints{display:flex;flex-direction:column;gap:7px}
.spoint{font-size:14px;line-height:1.6;color:var(--ink-2)}
.sex{margin-top:14px;padding:12px 14px;border-radius:12px;background:var(--panel-2);font-family:var(--serif);font-size:14.5px;line-height:1.8}
.strap{margin-top:14px;padding:12px 14px;border-radius:12px;background:rgba(184,134,43,.1);border-left:3px solid var(--gold);font-size:13.5px}
.scheck{display:flex;flex-direction:column;gap:10px;margin:6px 0 16px}
.sck{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.6;cursor:pointer}
.sck input{margin-top:4px;accent-color:var(--brand);width:16px;height:16px}
.stext{width:100%;min-height:88px;padding:14px;border-radius:12px;border:1px solid var(--line);background:var(--panel);
  font-family:var(--font);font-size:14px;resize:vertical;outline:none}
.stext:focus{border-color:var(--brand)}

.sfinish{text-align:center;padding:18px 4px 6px}
.sbig{font-family:var(--serif);font-size:30px;font-weight:700;animation:pop .4s cubic-bezier(.22,1,.36,1)}
.sline{color:var(--muted);font-size:14px;margin-top:8px}
.sgain{font-family:var(--serif);font-size:38px;color:var(--gold);margin:14px 0 6px}
.scombo2{font-size:13px;color:var(--brand)}

.confetti{position:fixed;inset:0;pointer-events:none;z-index:120;overflow:hidden}
.confetti i{position:absolute;top:-12px;width:8px;height:12px;border-radius:2px;animation:fall 1.5s ease-in forwards}
@keyframes fall{0%{transform:translateY(0) rotate(0);opacity:1}100%{transform:translateY(105vh) rotate(720deg);opacity:.9}}

@media (max-width:560px){
  .sbox{border-radius:18px;max-height:96vh}
  .shead{padding:14px 16px 8px}
  .sbody{padding:12px 16px 22px}
  .scard{min-height:200px;padding:26px 16px}
  .sbtn{padding:13px 14px}
}

/* ============ 学习流程 ============ */
.sword.sm{font-size:clamp(28px,6vw,38px);margin-top:6px}
.sph.center{text-align:center}
.sopts{display:flex;flex-direction:column;gap:9px;margin-top:18px}
.sopt{display:flex;align-items:center;gap:12px;text-align:left;padding:14px 16px;border-radius:13px;
  border:1px solid var(--line);background:var(--panel);font-size:15px;transition:.15s}
.sopt:hover:not(:disabled){border-color:var(--brand);background:var(--brand-soft)}
.sopt b{width:24px;height:24px;border-radius:7px;background:var(--panel-2);display:grid;place-items:center;font-size:12px;color:var(--muted);flex:none}
.sopt:disabled{cursor:default}
.sopt.right{border-color:var(--green);background:var(--green-soft)}
.sopt.right b{background:var(--green);color:#fff}
.sopt.wrong{border-color:var(--brand);background:var(--brand-soft)}
.sopt.wrong b{background:var(--brand);color:#fff}
.sdots{text-align:center;font-size:34px;margin:10px 0}
.scloze{font-family:var(--serif);font-size:19px;line-height:1.9;padding:14px 16px;border-radius:12px;background:var(--panel-2);margin:8px 0}
.scloze .blank{color:var(--brand);letter-spacing:.08em;border-bottom:2px solid var(--brand);padding:0 6px}
.sprompt.fix{color:var(--gold);font-weight:600}
.sipa{text-align:center;padding:26px 10px 10px}
.sipasym{font-family:Georgia,'Times New Roman',serif;font-size:clamp(52px,12vw,76px);line-height:1;color:var(--brand);letter-spacing:.02em}
.sipaword{font-family:var(--serif);font-size:20px;margin-top:14px}
.sipatip{font-size:13px;color:var(--muted);margin-top:8px}
.swrong{margin-top:18px;font-size:13px;color:var(--muted);line-height:1.8;padding:12px 14px;border-radius:12px;background:var(--panel-2)}
.swrong.ok{color:var(--green);text-align:center}

/* 掌握度 */
.mbar{display:inline-flex;align-items:center;gap:6px;font-size:11px;color:var(--muted)}
.mbar i{display:block;width:44px;height:5px;border-radius:9px;background:var(--line);overflow:hidden}
.mbar i b{display:block;height:100%;border-radius:9px;background:var(--brand)}
.mbar.hi i b{background:var(--green)}
@media (max-width:560px){ .sipasym{font-size:64px} }