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.levelup-box{background:var(--w-paper);outline:1.5px dashed var(--w-deep);outline-offset:-8px}:root[data-world] .levelup-cheer{color:var(--w-deep)}:root[data-world] .sc-page .rd-bar{border:1.5px solid var(--w-deep);box-shadow:none}:root[data-world] .sc-page .rd-play:not(.on){background:var(--w-accent);color:var(--w-on-accent)}:root[data-world] .sc-page .rd-toggle{color:var(--w-ink)}:root[data-world] .sc-page .rd-toggle.on,:root[data-world] :is(.rd-page,.page.oral-page) .rd-toggle.on{background:color-mix(in srgb,var(--w-deep) 22%,var(--w-paper));color:var(--w-ink);outline:2px solid var(--w-deep);outline-offset:-2px}:root[data-world] .sc-page .rd-en{background:color-mix(in srgb,var(--w-deep) 7%,var(--w-paper));color:var(--w-ink)}:root[data-world] .lesson-words>summary{list-style:none}:root[data-world] .lesson-words>summary::-webkit-details-marker{display:none}:root[data-world] .lesson-words>summary:before{content:"";display:inline-block;width:8px;height:8px;margin-right:var(--s-3);border-right:2.5px solid var(--w-deep);border-bottom:2.5px solid var(--w-deep);transform:translateY(-2px) rotate(-45deg);transition:transform .1s ease}:root[data-world] .lesson-words[open]>summary:before{transform:translateY(-4px) rotate(45deg)}:root[data-world] .write-box svg>g>g:first-child path[clip-path]{stroke:color-mix(in srgb,var(--w-ink) 18%,transparent)}.home-header{position:sticky;top:0;z-index:25;display:flex;align-items:center;gap:var(--s-3);background:var(--head-bg, var(--sky));border-bottom:1px solid rgba(77,88,110,.12);margin:-20px -16px var(--s-4);padding:var(--s-4) var(--s-4) var(--s-3);flex-wrap:nowrap}.mascot{display:grid;place-items:center}.avatar{overflow:visible}.mascot .avatar{filter:drop-shadow(0 3px 6px 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var(--s-4);border:none;border-radius:var(--r-lg);background:var(--paper);box-shadow:var(--shadow);color:var(--ink);text-align:left}.rv-line:active{transform:translateY(2px)}.rv-line .rv-go{margin-left:auto}.rv-figures{font-family:var(--font-rail);font-size:var(--t-base);font-variant-numeric:tabular-nums}.rv-week{padding:2px var(--s-2);border-radius:var(--r-pill);background:var(--jade-soft);color:var(--jade-ink);font-family:var(--font-rail);font-size:var(--t-xs);font-weight:700}.rv-see-all{font-family:var(--font-rail);font-size:var(--t-md);font-weight:700;color:var(--jade-ink)}.rv-figures~.rv-see-all{margin-left:auto}.rv-see-all:after{content:" →"}.pm-backdrop{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:var(--s-4);background:var(--sky);animation:sheet-fade .25s ease}.pm-box{width:min(100%,420px);display:grid;justify-items:center;gap:var(--s-3);padding:var(--s-5) var(--s-4);border-radius:var(--r-md);background:var(--paper);box-shadow:var(--shadow);text-align:center}.pm-stars{display:flex;align-items:flex-end;gap:var(--s-2);color:var(--gold);animation:pm-pop .6s var(--ease-spring) both}.pm-title{margin:0;font-family:var(--font-hanzi);font-weight:400;font-size:var(--t-xl);color:var(--ink)}.pm-facts{list-style:none;margin:0;padding:0;display:grid;gap:var(--s-1);font-family:var(--font-rail);font-size:var(--t-md);color:var(--ink)}.pm-go{margin-top:var(--s-2)}@keyframes pm-pop{0%{transform:scale(.4);opacity:0}to{transform:none;opacity:1}}.cz-head{margin:var(--s-3) var(--s-4) var(--s-2)}.cz-step,.cz-qkind,.cz-hint{margin:0 0 var(--s-2);color:var(--ink-soft);font-size:var(--t-sm)}.cz-title{margin:0 0 var(--s-2);font-size:var(--t-lg)}.cz-prompt,.cz-passage,.cz-question,.cz-angles,.cz-order,.cz-words,.cz-build,.cz-final{margin:var(--s-3) var(--s-4)}.cz-prompt summary{color:var(--ink-soft);font-size:var(--t-sm);cursor:pointer}.cz-passage p,.cz-essay p{margin:0 0 var(--s-3);font-family:var(--font-hanzi);font-size:var(--t-base);line-height:1.9;text-indent:2em}.cz-q{font-family:var(--font-hanzi);font-size:var(--t-base)}.cz-why{margin:var(--s-3) 0;padding:var(--s-3);border-radius:var(--r-sm);background:var(--paper);font-size:var(--t-sm);line-height:1.6}.cz-why.right{background:var(--jade-soft)}.cz-next{display:block;margin:var(--s-4) auto}.cz-card{display:flex;flex-direction:column;gap:var(--s-1);width:100%;margin:0 0 var(--s-2);padding:var(--s-3);border:2px solid transparent;border-radius:var(--r-md);background:var(--paper);box-shadow:var(--shadow-soft);color:var(--ink);font-family:var(--font-hanzi);text-align:left}.cz-card.on{border-color:var(--jade)}.cz-ideas{margin:0 0 var(--s-3);padding:0;list-style:none}.cz-attached{display:flex;flex-wrap:wrap;gap:var(--s-2)}.cz-word small{color:var(--ink-soft);font-family:var(--font-pinyin)}.cz-shake{animation:shake .4s}.cz-essay-so-far{margin:0 0 var(--s-3);font-family:var(--font-hanzi);line-height:1.9}.cz-tools{display:flex;flex-wrap:wrap;gap:var(--s-2);align-items:center;margin:0 0 var(--s-3)}.cz-essay h3{margin:0 0 var(--s-3);text-align:center}.cz-sent{cursor:pointer}.cz-sent.reading{background:var(--jade-soft)}.cz-key{padding:0;border:none;border-bottom:2px solid var(--jade);background:none;color:inherit;font:inherit}.cz-blank{color:var(--ink-soft)}.cz-blank.next{color:var(--jade-ink)}.cz-gloss{margin:var(--s-3) 0;padding:var(--s-3);border-radius:var(--r-md);background:var(--paper);box-shadow:var(--shadow-soft)}.cz-gloss p{margin:var(--s-1) 0}.cz-locked{margin:var(--s-5) var(--s-4);text-align:center}.cz-angles .cz-card b{font-size:var(--t-md)}.cz-angles .cz-card span{color:var(--ink-soft);font-size:var(--t-sm)}@media(max-width:899px){body:has(.ui-switch) .bottom-nav{padding-left:calc(var(--s-2) + 40px + var(--s-1))}.ui-switch,body:has(.owl-moment) .ui-switch{display:flex}.ui-switch{left:calc(50% - min(430px,100% - 20px) / 2 + var(--s-2));bottom:calc(12px + env(safe-area-inset-bottom,0px) + var(--s-2));flex-direction:column;width:40px;gap:2px;padding:3px;border:1.5px solid var(--sky-deep);border-radius:var(--r-md);box-shadow:none;font-size:var(--t-xs)}.ui-switch-side{width:100%;min-width:0;height:25px;padding:0;border-radius:var(--r-xs)}}:root[data-world] .ui-switch{border:1.5px solid var(--w-deep);background:color-mix(in srgb,var(--w-deep) 8%,var(--w-paper));box-shadow:none}:root[data-world] .ui-switch-side{color:var(--w-ink)}:root[data-world] .ui-switch-side.on{background:var(--w-accent);color:var(--w-on-accent)}:root[data-world] .ach-wrap .ach-toast{background:var(--w-paper);border:2px solid var(--w-deep);outline:1.5px dashed var(--w-deep);outline-offset:-6px;box-shadow:var(--shadow-lift)}:root[data-world] .ach-wrap .ach-icon{background:color-mix(in srgb,var(--w-deep) 10%,#fff)}:root[data-world] .ach-wrap .ach-heading{color:var(--w-accent-text)}:root[data-world] .ach-wrap .ach-name{color:var(--w-ink)}:root[data-world] .ach-wrap .ach-sub{color:var(--ink-soft)}:root[data-world] .page.profile .stg-group,:root[data-world] .page.settings .stg-group,:root[data-world] .hsk-progress,:root[data-world] .word-ribbon,:root[data-world] .rv-group,:root[data-world] .rv-card,:root[data-world] .rv-line,:root[data-world] .set-card,:root[data-world] .pm-box{background:color-mix(in srgb,#fff 60%,var(--w-paper));border:2px solid var(--w-deep);border-radius:var(--r-lg);box-shadow:none;color:var(--w-ink)}:root[data-world] .page.profile .stg-row,:root[data-world] .page.profile .stg-block,:root[data-world] .page.settings .stg-row,:root[data-world] .page.settings .stg-block{border-top-color:color-mix(in srgb,var(--w-deep) 22%,transparent)}:root[data-world] .page.profile .stg-group>:first-child,:root[data-world] .page.settings .stg-group>:first-child{border-top-color:transparent}:root[data-world] :is(.page.profile,.page.settings) :is(.stg-text .stg-zh,.benefit-list .stg-zh,.stg-head,.picker-title){color:var(--w-ink)}:root[data-world] :is(.page.profile,.page.settings) .stg-icon{background:transparent;border:1.5px solid color-mix(in srgb,var(--w-deep) 40%,transparent);color:var(--w-ink)}:root[data-world] .page.settings .stg-row.on .stg-icon{background:color-mix(in srgb,var(--w-accent) 18%,#fff);border-color:var(--w-deep)}:root[data-world] .page.settings .stg-icon.danger{border-color:var(--red-deep);color:var(--red-deep)}:root[data-world] .benefit-cta,:root[data-world] .rv-start.rv-start-btn,:root[data-world] .signin-go,:root[data-world] .pm-go,:root[data-world] .stg-keep{background:var(--w-accent);color:var(--w-on-accent);border:2px solid var(--w-deep)}:root[data-world] :is(.page.profile,.page.settings) .stg-btn,:root[data-world] .rv-cards-btn,:root[data-world] .cg-more,:root[data-world] .hsk-cert-btn{background:color-mix(in srgb,#fff 60%,var(--w-paper));border:1.5px solid var(--w-deep);box-shadow:none;color:var(--w-ink)}:root[data-world] :is(.page.profile,.page.settings) .stg-btn .stg-zh,:root[data-world] .rv-cards-btn :lang(zh){color:var(--w-ink)}:root[data-world] .page.profile>.profile-premium{background:color-mix(in srgb,#fff 60%,var(--w-paper));border:2px solid var(--w-deep);border-top:6px solid var(--w-accent);box-shadow:none}:root[data-world] .benefit-crown{color:var(--w-accent-text)}:root[data-world] .profile-premium .benefit-icon{background:transparent;color:var(--w-ink)}:root[data-world] .profile-avatar{padding:var(--s-3);border:3px solid var(--w-deep);border-radius:50%;outline:1.5px dashed var(--w-deep);outline-offset:4px;background:color-mix(in srgb,#fff 60%,var(--w-paper))}:root[data-world] .profile-avatar:has(.world-face){border-radius:var(--r-lg)}:root[data-world] .profile-avatar .avatar{filter:none}:root[data-world] .profile-title{color:var(--w-ink)}:root[data-world] .buddy-name{border-bottom:1.5px dashed var(--w-deep);color:var(--w-ink)}:root[data-world] .buddy-name:placeholder-shown,:root[data-world] .buddy-name:focus{border:1.5px dashed var(--w-deep);background:color-mix(in srgb,#fff 60%,var(--w-paper));box-shadow:none}:root[data-world] .buddy-name:focus{outline:2px solid var(--w-accent);outline-offset:2px}:root[data-world] .level-bar,:root[data-world] .hsk-bar,:root[data-world] .book-progress,:root[data-world] .set-ring{background:color-mix(in srgb,#fff 60%,var(--w-paper));border:1.5px solid var(--w-deep);box-shadow:none}:root[data-world] .level-fill,:root[data-world] .hsk-bar-fill,:root[data-world] .book-progress-fill,:root[data-world] .set-ring>i{background:var(--w-accent)}:root[data-world] .set-ring>i[style*="100%"]{background:var(--w-deep)}:root[data-world] :is(.level-xp,.hsk-lvl){color:var(--w-ink)}:root[data-world] .hsk-row.now .hsk-lvl{color:var(--w-accent-text)}:root[data-world] .profile-data .stg-stats{gap:var(--s-2)}:root[data-world] .profile-data .stg-stat,:root[data-world] .profile-data .stg-stat+.stg-stat{padding:var(--s-2);border:1.5px dashed color-mix(in 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60%,var(--w-paper));line-height:0}:root[data-world] .me-id-fields{display:flex;flex-direction:column;gap:var(--s-2);min-width:0}:root[data-world] .me-id .buddy-name{width:100%;margin:0;padding:var(--s-1) var(--s-2);border:none;border-bottom:1.5px dashed currentColor;border-radius:var(--r-2xs);text-align:left;font-family:var(--font-hanzi);font-size:var(--t-xl);color:inherit}:root[data-world] .me-id .buddy-name:is(:placeholder-shown,:focus){color:var(--w-ink)}:root[data-world] .me-id-level{font-family:var(--font-hanzi);font-size:var(--t-lg)}:root[data-world] .me-id :is(.level-bar,.level-fill){display:block}:root[data-world] .me-id .level-xp{font-size:var(--t-sm);color:inherit}:root[data-world] .me-numbers{display:grid;grid-template-columns:1fr 1fr;gap:var(--s-2);margin:0}:root[data-world] .me-numbers>div{padding:var(--s-2) var(--s-3);border:1.5px dashed color-mix(in srgb,var(--w-deep) 45%,transparent);border-radius:var(--r-sm)}:root[data-world] .me-numbers dt{display:flex;align-items:center;gap:var(--s-1);font-family:var(--font-hanzi);font-size:var(--t-sm);color:var(--w-ink)}:root[data-world] .me-numbers dd{margin:var(--s-1) 0 0;font-family:var(--font-display);font-size:var(--t-2xl);font-weight:700;font-variant-numeric:tabular-nums;color:var(--w-ink)}@media(min-width:720px){:root[data-world] .me-numbers{grid-template-columns:repeat(3,1fr)}}:root[data-world] .me-numbers.five{grid-template-columns:repeat(5,1fr);margin-top:var(--s-2)}:root[data-world] .me-stamp{text-align:center}:root[data-world] .me-stamp dt{justify-content:center}:root[data-world] .me-seal{display:inline-grid;place-items:center;width:1.7em;height:1.7em;border:2px solid currentColor;border-radius:var(--r-2xs);font-family:var(--font-hanzi);font-size:var(--t-xl);color:var(--w-accent-text)}:root[data-world] .me-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}:root[data-world] .me-cast-hint{margin:0 0 var(--s-3);font-size:var(--t-sm);color:var(--w-ink)}:root[data-world] .me-cast-world+.me-cast-world{margin-top:var(--s-4)}:root[data-world] .me-cast-world{content-visibility:auto;contain-intrinsic-size:auto 230px}:root[data-world] .me-cast-name{margin:0 0 var(--s-2);font-family:var(--font-hanzi);font-weight:400;font-size:var(--t-base);color:var(--w-ink)}:root[data-world] .me-cast-name small{font-family:var(--font-display);font-size:var(--t-xs);color:var(--w-deep)}:root[data-world] .me-faces{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:var(--s-2);margin:0;padding:0}:root[data-world] .me-face{border:2px solid var(--w-deep);border-radius:var(--r-sm);background:var(--w-paper)}:root[data-world] .me-face-btn{display:flex;flex-direction:column;align-items:center;gap:var(--s-1);width:100%;padding:var(--s-2) var(--s-1);border:none;background:none;font:inherit;text-align:center;cursor:pointer}:root[data-world] .me-face-btn:disabled{cursor:default}:root[data-world] .me-face.on{border-color:var(--w-accent)}:root[data-world] .me-face.locked{border:1.5px dashed color-mix(in srgb,var(--w-deep) 55%,transparent);background:transparent}:root[data-world] .me-face-art{line-height:0}:root[data-world] .me-face.locked .me-face-art{filter:grayscale(1);opacity:.5}:root[data-world] .me-face-name{font-family:var(--font-hanzi);font-size:var(--t-md);line-height:1.2;color:var(--w-ink)}:root[data-world] .hsk-certs{display:flex;flex-wrap:wrap;gap:var(--s-2);margin-top:var(--s-3)}:root[data-world] .hsk-certs .hsk-cert-btn{margin:0}:root[data-world] .hsk-cert-lv{font-variant-numeric:tabular-nums;font-weight:800}:root[data-world] .font-card,:root[data-world] .picker-card,:root[data-world] .ach-card.got{background:color-mix(in srgb,#fff 60%,var(--w-paper));border:2px solid var(--w-deep);box-shadow:none;color:var(--w-ink)}:root[data-world] .font-card.selected,:root[data-world] .picker-card.selected{background:color-mix(in srgb,var(--w-accent) 14%,#fff);outline:3px solid 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var(--w-ink)}:root[data-world=agency]{--w-lesson-floor: var(--w-deep);--w-lesson-ground: radial-gradient(circle at 50% 100%, transparent 3.5px, var(--w-accent) 3.5px 4.8px, transparent 4.8px) 1px 0 / 10px 14px repeat-y, linear-gradient(90deg, color-mix(in srgb, var(--w-paper) 16%, var(--w-deep)) 0 12px, var(--w-accent) 12px 13.5px, transparent 13.5px), linear-gradient(90deg, color-mix(in srgb, var(--w-accent) 32%, transparent) 1px, transparent 1px) 20px 0 / 72px 96px, linear-gradient(color-mix(in srgb, var(--w-accent) 32%, transparent) 1px, transparent 1px) 20px 0 / 72px 96px, conic-gradient(color-mix(in srgb, var(--w-paper) 7%, transparent) 25%, transparent 0 50%, color-mix(in srgb, var(--w-paper) 7%, transparent) 0 75%, transparent 0) 20px 0 / 144px 192px;--w-lesson-ink: var(--w-paper);--w-lesson-road: var(--w-accent)}:root[data-world=incubator]{--w-lesson-floor: #d9e8e8;--w-lesson-ground: linear-gradient(transparent 0 6px, var(--w-accent) 6px 8.5px, transparent 8.5px 17px, 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