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14px}.q-photo{min-height:0}.q-photo.empty{display:none}.qhead-title{font-size:1.2rem}.qtool,.qfont,.qtimer{height:40px}.qtool{width:40px}.qnums .dot{min-width:40px;height:40px;font-size:15px}.qnav{z-index:10;padding:10px 14px max(10px, env(safe-area-inset-bottom));background:var(--glass);-webkit-backdrop-filter:saturate(180%)blur(20px);border-top:.5px solid var(--sep);position:fixed;bottom:0;left:0;right:0}.qnav .btn{padding:12px 20px;font-size:16px}}.quiz-wrap{width:100%;min-width:0}.quiz-wrap>*{min-width:0;max-width:100%}@media (width<=900px){.qhead .hide-sm,.qnav .hide-sm{display:none}.qhead{gap:6px}.qhead-title{margin-right:2px}.qfont button{padding:0 9px}}@media (width<=480px){.qhead-title span{display:none}.qhead-title{min-width:26px;font-size:1.3rem}.qtimer{gap:4px;padding:0 10px;font-size:16px}.qhead .spacer{display:none}}:root[data-theme=dark] .q-img img,:root[data-theme=dark] .review-body img,:root[data-theme=dark] .search-item img{filter:brightness(.88)contrast(1.02)}:root[data-theme=dark] .reader-page img{filter:brightness(.82)}:root[data-theme=dark] .tile-exam{background:#262a33}:root[data-theme=dark] .btn-white{color:#15171c;background:#e4e6eb}:root[data-theme=dark] .btn-primary,:root[data-theme=dark] .qnums .dot.cur,:root[data-theme=dark] .resume-ic{color:#0d1420}:root[data-theme=dark] .seg button.on{background:#3a3f4b}:root[data-theme=dark] .chip-tab.on{background:var(--accent);color:#0d1420}:root[data-theme=dark] .qpanel,:root[data-theme=dark] .qbody{box-shadow:var(--shadow-s), inset 0 0 0 1px var(--sep)}body{transition:background-color .3s}.page.wide{max-width:1320px}.crumbs{color:var(--text-2);flex-wrap:wrap;align-items:center;gap:6px;padding:26px 0 16px;font-size:.92rem;display:flex}.crumbs span{align-items:center;gap:6px;display:inline-flex}.crumbs a:hover{color:var(--accent)}.crumbs .cur{color:var(--text);font-weight:600}.crumb-sep{color:var(--text-3)}.panel{background:var(--bg-elev);border-radius:var(--r-l);box-shadow:var(--shadow-m);margin-bottom:18px;padding:26px}:root[data-theme=dark] .panel{box-shadow:var(--shadow-s), inset 0 0 0 1px var(--sep)}.split{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:32px;display:grid}.split-side{border-left:1px solid var(--sep);flex-direction:column;gap:16px;padding-left:32px;display:flex}.hero-title{align-items:flex-start;gap:16px;margin-bottom:22px;display:flex}.hero-title h1{font-size:1.9rem}.hero-title p{margin:6px 0 0}.hero-ic{background:var(--accent);color:#fff;border-radius:16px;flex-shrink:0;place-items:center;width:54px;height:54px;display:grid}.hero-ic.sm{background:var(--accent-tint);width:38px;height:38px;color:var(--accent);border-radius:11px}.hero-ic.amber{background:#ffcc0029;padding:8px}.hero-ic.amber img{width:100%;height:100%}.mini-stats{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.mini-stats>div{border-radius:var(--r-m);box-shadow:inset 0 0 0 1px var(--sep);background:var(--fill-2);padding:14px 16px}.mini-stats small{color:var(--text-2);align-items:center;gap:6px;font-size:.85rem;display:flex}.mini-stats b{letter-spacing:-.02em;margin-top:4px;font-size:1.8rem;font-weight:800;display:block}.mini-stats em{color:var(--text-2);font-size:.9rem;font-style:normal;font-weight:600}.note{color:var(--text-2);align-items:flex-start;gap:8px;margin:16px 0 0;font-size:.9rem;display:flex}.note .icon{color:var(--accent);margin-top:2px}.label-cap{letter-spacing:.06em;text-transform:uppercase;color:var(--text-2);align-items:center;gap:8px;margin:0 0 12px;font-size:.85rem;font-weight:700;display:flex}.count-grid{grid-template-columns:repeat(5,1fr);gap:8px;display:grid}.count-btn{box-shadow:inset 0 0 0 1.5px var(--sep);border-radius:14px;flex-direction:column;align-items:center;gap:2px;padding:12px 6px;transition:background .2s,box-shadow .2s,transform .15s;display:flex}.count-btn b{font-size:1.35rem;font-weight:800}.count-btn small{color:var(--text-2);font-size:.85rem}.count-btn:hover{box-shadow:inset 0 0 0 1.5px var(--accent)}.count-btn.on{background:var(--accent);color:#fff;box-shadow:none}.count-btn.on small{color:#ffffffd9}:root[data-theme=dark] .count-btn.on{color:#0d1420}:root[data-theme=dark] .count-btn.on small{color:#0d1420bf}.opt-card{border-radius:var(--r-m);box-shadow:inset 0 0 0 1px var(--sep);padding:16px 18px 6px}.opt-row{border-top:1px solid var(--sep);cursor:pointer;align-items:center;gap:14px;padding:12px 0;display:flex}.opt-card .label-cap+.opt-row{border-top:0;padding-top:4px}.opt-row input{opacity:0;pointer-events:none;position:absolute}.opt-txt{flex:1;min-width:0}.opt-txt b{flex-wrap:wrap;align-items:center;gap:8px;font-weight:700;display:flex}.opt-txt small{color:var(--text-2);margin-top:2px;font-size:.85rem;line-height:1.4;display:block}.opt-ic{background:var(--accent-tint);border-radius:9px;place-items:center;width:30px;height:30px;font-size:1rem;display:grid}.opt-badge{text-transform:uppercase;background:var(--accent);color:#fff;border-radius:999px;padding:2px 8px;font-size:.7rem;font-style:normal;font-weight:800}.opt-row input:checked+.toggle{background:var(--accent)}.opt-row input:checked+.toggle:after{transform:translate(20px)}.opt-row input:focus-visible+.toggle{outline:3px solid color-mix(in srgb, var(--accent) 55%, transparent);outline-offset:2px}.btn-xl{border-radius:999px;width:100%;padding:17px 24px;font-size:1.15rem}.btn-block{width:100%}.panel-head{align-items:center;gap:12px;margin-bottom:16px;display:flex}.panel-head h3{font-size:1.1rem}.attempts{flex-direction:column;gap:12px;display:flex}.attempt{border-radius:var(--r-m);box-shadow:inset 0 0 0 1px var(--sep);align-items:center;gap:18px;padding:16px;display:flex}.attempt-pct{border-radius:16px;flex-direction:column;flex-shrink:0;justify-content:center;align-items:center;width:76px;height:76px;display:flex}.attempt-pct b{font-size:1.6rem;font-weight:800;line-height:1}.attempt-pct small{font-size:.8rem}.attempt-pct span{margin-top:2px;font-size:.8rem}.attempt-pct.ok{background:var(--ok-tint);color:var(--ok)}.attempt-pct.mid{color:#c76a00;background:#ff9f0a24}.attempt-pct.bad{background:var(--bad-tint);color:var(--bad)}:root[data-theme=dark] .attempt-pct.mid{color:var(--mid)}.attempt-main{flex-direction:column;flex:1;gap:8px;min-width:0;display:flex}.attempt-meta,.attempt-tags{color:var(--text-2);flex-wrap:wrap;align-items:center;gap:8px 16px;font-size:.9rem;display:flex}.attempt-meta span{align-items:center;gap:5px;display:inline-flex}.chip-ok{color:var(--ok);font-weight:600}.tag-ok,.tag-bad,.tag-skip{border-radius:999px;align-items:center;padding:3px 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var(--accent);background:var(--accent-tint);color:var(--accent)}.pill-btn.on.f-mistakes{box-shadow:inset 0 0 0 2px var(--bad);background:var(--bad-tint);color:var(--bad)}.pill-n{background:var(--fill);min-width:24px;height:24px;color:var(--text-2);border-radius:999px;place-items:center;padding:0 7px;font-size:.8rem;display:inline-grid}.num-btn{min-width:58px;height:50px;box-shadow:inset 0 0 0 1.5px var(--sep);border-radius:14px;padding:0 14px;font-size:1.05rem;font-weight:800}.num-btn:hover{box-shadow:inset 0 0 0 1.5px var(--accent)}.num-btn.on{background:var(--accent);color:#fff;box-shadow:none}:root[data-theme=dark] .num-btn.on{color:#0d1420}.stat-box{border-radius:var(--r-m);background:var(--fill-2);padding:16px 18px}.stat-box small{letter-spacing:.06em;text-transform:uppercase;color:var(--text-2);font-size:.85rem;font-weight:700;display:block}.stat-box b{letter-spacing:-.02em;font-size:2.2rem;font-weight:800;display:block}.qlist{flex-direction:column;gap:12px;display:flex}.qlist-item{text-align:left;border-radius:var(--r-m);box-shadow:inset 0 0 0 1px var(--sep);flex-direction:column;gap:10px;padding:16px;transition:box-shadow .2s,background .2s;display:flex}.qlist-item:hover{box-shadow:inset 0 0 0 1.5px var(--accent);background:var(--fill-2)}.qlist-tags{flex-wrap:wrap;gap:8px;display:flex}.qlist-row{align-items:center;gap:14px;display:flex}.qlist-row img{object-fit:cover;border-radius:10px;flex-shrink:0;width:120px;height:76px}.qlist-row b{font-size:1.02rem;font-weight:600;line-height:1.45}.signs-hero{flex-wrap:wrap;align-items:center;gap:18px;display:flex;position:relative;overflow:hidden}.signs-hero .hero-ic{width:64px;height:64px}.signs-hero-txt{flex:1;min-width:220px}.signs-hero-txt h1{font-size:1.8rem}.signs-hero-txt p{margin:4px 0 0}.cat-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;display:grid}.cat-card{border-radius:var(--r-l);background:var(--bg-elev);box-shadow:var(--shadow-m);transition:transform .2s var(--ease), box-shadow .2s;flex-direction:column;gap:8px;padding:20px;display:flex}:root[data-theme=dark] .cat-card{box-shadow:var(--shadow-s), inset 0 0 0 1px var(--sep)}.cat-card:hover{box-shadow:var(--shadow-l);transform:translateY(-3px)}.cat-top{justify-content:space-between;align-items:flex-start;margin-bottom:8px;display:flex}.cat-ic{background:var(--fill-2);border-radius:18px;place-items:center;width:76px;height:76px;padding:10px;display:grid}.cat-ic img{object-fit:contain;width:100%;height:100%}.cat-arrow{background:var(--fill-2);width:34px;height:34px;color:var(--text-2);border-radius:50%;place-items:center;display:grid;transform:rotate(-45deg)}.cat-card b{font-size:1.1rem}.cat-card small{color:var(--text-2)}.signs-toolbar{flex-direction:column;gap:4px;margin-bottom:14px;display:flex}.signs-toolbar .search-box{background:var(--bg-elev);max-width:560px;box-shadow:inset 0 0 0 1px var(--sep);height:52px}.sign-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px;display:grid}.sign-card{border-radius:var(--r-l);box-shadow:var(--shadow-s), inset 0 0 0 1px var(--sep);text-align:center;transition:transform .2s var(--ease), box-shadow .2s;color:#1d1d1f;background:#fff;flex-direction:column;align-items:stretch;gap:12px;padding:18px 16px 20px;display:flex}.sign-card:hover{box-shadow:var(--shadow-l);transform:translateY(-3px)}.sign-pic{aspect-ratio:1;place-items:center;display:grid}.sign-pic img{object-fit:contain;filter:drop-shadow(0 2px 3px #0000001f);width:100%;height:100%}.sign-cap{font-size:.98rem;font-weight:500;line-height:1.35}.sign-cap b{font-weight:800}:root[data-theme=dark] .sign-card{background:#e9eaee}.sign-fallback{aspect-ratio:1;background:var(--fill-2);width:70%;color:var(--text-2);border-radius:20px;place-items:center;font-size:1.4rem;display:grid}.sign-detail{text-align:center;flex-direction:column;align-items:center;gap:10px;display:flex}.sign-detail-pic{background:#fff;border-radius:24px;place-items:center;width:220px;height:220px;padding:14px;display:grid}.sign-detail-pic img{object-fit:contain;width:100%;height:100%}.sign-detail p{margin:0;line-height:1.55}.modal:has(.sign-detail){width:min(520px,100%)}.learn-card{flex-direction:column;gap:18px;display:flex}.learn-top{flex-direction:column;gap:4px;display:flex}.learn-pic{aspect-ratio:1;width:min(260px,70vw);box-shadow:var(--shadow-m);animation:pop .35s var(--spring);background:#fff;border-radius:28px;place-items:center;margin:0 auto;padding:16px;display:grid}.learn-pic img{object-fit:contain;width:100%;height:100%}.learn-card .answer{text-align:center;justify-content:center;font-weight:600}.learn-foot{justify-content:space-between;align-items:center;display:flex}@media (width<=900px){.split,.practice-grid{grid-template-columns:1fr}.split-side{border-left:0;border-top:1px solid var(--sep);padding-top:22px;padding-left:0}.panel{padding:18px}.mini-stats{grid-template-columns:repeat(3,1fr);gap:8px}.mini-stats b{font-size:1.4rem}.count-grid{gap:6px}.count-btn b{font-size:1.1rem}.sign-grid{grid-template-columns:repeat(2,1fr);gap:10px}.sign-card{padding:12px 10px 14px}.sign-cap{font-size:.88rem}.cat-grid{grid-template-columns:repeat(2,1fr);gap:10px}.cat-card{padding:14px}.cat-ic{width:60px;height:60px}.crumbs{padding:16px 0 10px}.attempt{flex-direction:column;align-items:stretch}.qlist-row img{width:90px;height:60px}}.topnav a{white-space:nowrap;padding:7px 11px}.topbar-in{gap:16px;max-width:1280px}@media (width<=1200px){.brand b{display:none}}@media (width<=1020px){.topnav a[href="#/lessons"]{display:none}}.count-grid{grid-template-columns:repeat(5,minmax(0,1fr))}@media (width<=900px){.split{grid-template-columns:minmax(0,1fr)}.count-btn{padding:10px 2px}.count-btn small{font-size:.72rem}.mini-stats>div{padding:10px}.mini-stats small{font-size:.72rem}.hero-title h1{font-size:1.5rem}}.cat-arrow{transform:none}.sign-detail-pic{justify-content:center;align-items:center;width:240px;height:240px;display:flex;overflow:hidden}.sign-detail-pic img{object-fit:contain;width:100%;max-width:100%;height:100%;max-height:100%;display:block}.sign-pic{overflow:hidden}.sign-pic img,.cat-ic img,.learn-pic img,.hero-ic img{max-width:100%;max-height:100%;display:block}.learn-pic{overflow:hidden}.install-card{border-radius:var(--r-l);background:var(--bg-elev);box-shadow:var(--shadow-s), inset 0 0 0 1px var(--sep);flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:18px;padding:16px 18px;display:flex}.install-card img{border-radius:12px}.install-txt{flex:1;min-width:200px}.install-txt b{display:block}.install-txt small{color:var(--text-2);font-size:.88rem}.install-home{margin-top:28px}@media (width>=761px){.install-home{display:none}}