@font-face{font-family:Inter;src:url(../assets/fonts/Inter-VF.ttf)format("truetype-variations");font-weight:100 900;font-style:normal;font-display:swap}:root{--ink:#1f1712;--paper:#fff;--warm-paper:#fffcf2;--orange:#ff8c3e;--orange-hover:#f5812d;--orange-pressed:#e8731c;--line:#1f17121f;--text-85:#1f1712d9;--text-75:#1f1712bf;--text-62:#1f17129e;--text-50:#1f171280;--text-45:#1f171273;--motion:#ffe3e3;--language:#fff6d2;--social:#e3fbdf;--cognition:#d9edff;--font-cn:"PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;--font-num:"Inter", var(--font-cn)}*,:after,:before{box-sizing:border-box}html{color:var(--ink);background:var(--paper);font-family:var(--font-cn);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility}body{min-width:320px;margin:0;overflow-x:hidden}a,button{font:inherit;color:inherit}.age-chip,.button,.desktop-nav a,.icon-button{transition:color .14s,background-color .14s,border-color .14s,transform 80ms}.age-chip:active,.button:active,.desktop-nav a:active,.icon-button:active{transform:scale(.98)}.page-enter-active,.page-leave-active{transition:opacity .15s,transform .15s}.page-enter-from{opacity:0;transform:translateY(6px)}.page-leave-to{opacity:0;transform:translateY(-2px)}a:focus-visible,button:focus-visible{outline:2px solid var(--ink);outline-offset:2px}.page-shell{min-height:100vh}.mobile-header{z-index:30;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff5;align-items:center;height:56px;padding:0 16px;display:flex;position:sticky;top:0}.brand-mark{color:var(--ink);flex:1;align-items:center;gap:6px;font-size:16px;font-weight:900;text-decoration:none;display:inline-flex}.brand-mark img,.site-footer__brand img{border-radius:50%;display:block}.brand-mark__dot{color:var(--orange)}.share-button{cursor:pointer;background:0 0;border:0;width:44px;height:44px;margin-right:-4px;padding:0}.share-button,.share-button span{border-radius:50%;justify-content:center;align-items:center;display:inline-flex}.share-button span{width:36px;height:36px;color:var(--text-62);font:500 18px/1 var(--font-num);border:1px solid #1f17122e}.desktop-header{display:none}.activity-page{width:100%}.breadcrumbs{display:none}.activity-article{width:100%;max-width:660px;padding:22px 16px calc(130px + env(safe-area-inset-bottom));margin:0 auto}.activity-article>h1{letter-spacing:-.01em;margin:0 0 14px;font-size:26px;font-weight:900;line-height:1.4}.activity-intro{color:var(--text-85);margin:0 0 14px;font-size:16.5px;font-weight:400;line-height:1.65}.activity-facts{align-items:stretch;gap:8px;width:100%;margin:0 0 16px;padding:0;list-style:none;display:flex}.activity-facts li{border:1px solid var(--line);text-align:center;text-overflow:ellipsis;white-space:nowrap;border-radius:12px;flex:1 1 0;justify-content:center;align-items:center;min-width:0;padding:8px 2px;font-size:13px;font-weight:500;line-height:1.25;display:flex}.activity-facts li,.activity-media{background:var(--warm-paper);overflow:hidden}.activity-media{cursor:zoom-in;aspect-ratio:20/9;border:0;border-radius:16px;width:100%;margin:0 0 14px;padding:0;display:block;position:relative}.activity-media img{-o-object-fit:contain;object-fit:contain;width:100%;height:100%;display:block}.activity-media__zoom{width:28px;height:28px;color:var(--text-62);font:600 14px/1 var(--font-num);background:#ffffffeb;border:1px solid #1f171226;border-radius:8px;justify-content:center;align-items:center;display:inline-flex;position:absolute;bottom:8px;right:8px}.cultivation-row{align-items:flex-start;gap:8px;margin:0 0 26px;display:flex}.cultivation-row__label{color:var(--text-62);flex:none;padding-top:7px;font-size:13.5px}.cultivation-row__items{flex-wrap:wrap;gap:8px;display:flex}.subgoal-chip{cursor:pointer;background:#fff;border:1px solid #1f171224;border-radius:999px;align-items:center;min-height:32px;padding:3px 12px 3px 4px;font-size:13.5px;font-weight:500;display:inline-flex}.observation-subgoal__icon,.subgoal-icon,.subgoal-sheet__icon{border-radius:50%;flex:none;justify-content:center;align-items:center;display:inline-flex;overflow:hidden}.subgoal-icon{width:24px;height:24px;margin-right:4px}.observation-subgoal__icon img,.subgoal-icon img,.subgoal-sheet__icon img{-o-object-fit:cover;object-fit:cover;width:100%;height:100%;display:block}.subgoal-icon--motion{background:var(--motion)}.subgoal-icon--language{background:var(--language)}.subgoal-icon--social{background:var(--social)}.subgoal-icon--cognition{background:var(--cognition)}.subgoal-icon--unknown{background:#f0ece6}.content-section,.story-scene{margin:0 0 32px}.content-section--compact{margin-bottom:30px}.scene-heading,.section-heading-row{align-items:baseline;gap:12px;display:flex}.section-heading-row{margin-bottom:12px}.section-label{border:1px solid var(--line);background:var(--warm-paper);letter-spacing:.04em;border-radius:4px;width:fit-content;margin:0 0 12px;padding:2px 8px;font-size:12.5px;font-weight:700;line-height:1.55;display:inline-flex}.scene-heading h2,.section-heading-row .section-label{margin-bottom:0}.print-link{text-underline-offset:3px;min-height:44px;margin:-10px 0 -10px auto;padding:10px 0;font-size:13px;font-weight:600}.scene-kicker{color:var(--text-50);letter-spacing:.08em;margin:0 0 6px;font-size:12.5px;font-weight:600;line-height:1}.scene-heading{margin-bottom:12px}.scene-heading h2{font-size:17px;font-weight:700;line-height:1.45}.scene-description{color:var(--text-75);margin:0 0 14px;font-size:16px;line-height:1.7}.scene-subsection{margin-top:14px}.scene-subsection .section-label{margin-bottom:8px}.number-list,.observation-card,.plain-list{margin:0;padding:0;list-style:none}.number-list{flex-direction:column;gap:12px;margin-bottom:28px;display:flex}.number-list li{align-items:flex-start;gap:10px;display:flex}.number-list li>span{background:var(--orange);width:22px;height:22px;font:700 12px/1 var(--font-num);border-radius:50%;flex:none;justify-content:center;align-items:center;margin-top:2px;display:inline-flex}.number-list p{margin:0;font-size:16px;line-height:1.65}.plain-list{flex-direction:column;gap:10px;display:flex}.observation-card li,.plain-list li{align-items:flex-start;gap:10px;font-size:15px;line-height:1.7;display:flex}.list-dot{background:var(--text-45);border-radius:50%;flex:none;width:6px;height:6px;margin-top:10px;display:block}.observation-card{background:var(--warm-paper);border:1px solid #1f17121a;border-radius:12px;flex-direction:column;gap:12px;padding:13px 14px;display:flex}.observation-subgoal{color:var(--text-62);white-space:nowrap;align-items:center;margin-left:6px;font-size:12px;line-height:20px;display:inline-flex}.observation-subgoal__icon{width:20px;height:20px;margin-right:4px}.meaning-list strong{font-weight:700}.content-provenance{color:var(--text-45);margin:40px 0 24px;font-size:12.5px;line-height:1.6}.site-footer{color:var(--text-62);border-top:1px solid #1f17121a;padding-top:16px;font-size:12.5px}.site-footer__brand{color:var(--ink);gap:6px;margin-bottom:6px}.site-footer__brand strong{font-size:14px;font-weight:900}.site-footer__brand>span{color:#1f17128c;margin-left:2px;font-size:12px}.site-footer__links{gap:14px;margin:8px 0}.site-footer__links a,.site-footer__meta a{color:inherit;text-decoration:none}.site-footer__meta{color:var(--text-45);font-size:11px;line-height:1.7}.desktop-record-card{display:none}.button{cursor:pointer;border:0;min-height:40px;padding:0 22px;font-weight:700}.button--orange{background:var(--orange);color:var(--ink)}.button--orange:hover{background:var(--orange-hover)}.button--orange:active{background:var(--orange-pressed)}.record-island{z-index:40;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));border:1px solid var(--line);background:var(--warm-paper);border-radius:14px;align-items:center;gap:10px;max-width:520px;min-height:66px;margin:0 auto;padding:10px 10px 10px 16px;transition:transform .28s,opacity .28s;display:flex;position:fixed;left:12px;box-shadow:0 6px 16px #1f17121f}.record-island.is-scrolling{pointer-events:none;opacity:0;transform:translateY(90px)}.record-island__copy{flex-direction:column;flex:1;min-width:0;display:flex}.record-island__copy strong{font-size:15px;font-weight:700}.record-island__copy span,.record-island__copy strong{text-overflow:ellipsis;white-space:nowrap;line-height:1.45;overflow:hidden}.record-island__copy span{color:var(--text-62);font-size:12.5px}.record-island__button{flex:none;min-height:44px;padding:0 20px;font-size:15px}.share-toast{z-index:80;background:var(--ink);color:#fff;border-radius:999px;padding:9px 14px;font-size:13px;position:fixed;top:72px;left:50%;transform:translate(-50%);box-shadow:0 6px 16px #1f17122e}.lightbox{z-index:100;touch-action:none;background:#000000eb;justify-content:center;align-items:center;display:flex;position:fixed;inset:0;overflow:hidden}.lightbox>img{-o-object-fit:contain;object-fit:contain;-webkit-user-select:none;user-select:none;-webkit-user-drag:none;max-width:96vw;max-height:86vh;transition:transform .12s ease-out;display:block}.lightbox__close{z-index:1;top:calc(12px + env(safe-area-inset-top));color:#fff;width:44px;height:44px;font:300 32px/1 var(--font-num);cursor:pointer;background:#ffffff24;border:0;border-radius:50%;justify-content:center;align-items:center;padding:0;display:inline-flex;position:absolute;right:12px}.lightbox__hint{bottom:calc(20px + env(safe-area-inset-bottom));color:#ffffffad;white-space:nowrap;font-size:12px;position:absolute;left:50%;transform:translate(-50%)}.sheet-backdrop{z-index:90;background:#1f171261;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}.subgoal-sheet{width:100%;max-width:560px;padding:30px 24px calc(28px + env(safe-area-inset-bottom));background:#fff;border-radius:16px 16px 0 0;position:relative;box-shadow:0 -12px 28px #1f171226}.subgoal-sheet__handle{background:#1f17122e;border-radius:999px;width:40px;height:4px;position:absolute;top:8px;left:50%;transform:translate(-50%)}.subgoal-sheet__close{width:44px;height:44px;color:var(--text-62);font:300 28px/1 var(--font-num);cursor:pointer;background:0 0;border:0;padding:0;position:absolute;top:14px;right:14px}.subgoal-sheet__icon{width:48px;height:48px;margin-bottom:14px}.eyebrow{color:var(--text-50);letter-spacing:.08em;margin:0 0 4px;font-size:12px;font-weight:600}.subgoal-sheet h2{margin:0 0 8px;font-size:22px;font-weight:800}.subgoal-sheet>p:not(.eyebrow){color:var(--text-75);margin:0 0 16px;font-size:15px;line-height:1.7}.text-link{text-underline-offset:4px;font-size:14px;font-weight:700}.text-link--muted{color:var(--text-50);font-weight:500;text-decoration:none}.wechat-guide{z-index:110;padding:calc(84px + env(safe-area-inset-top)) 28px 28px;color:#fff;text-align:right;background:#1f1712f0;position:fixed;inset:0}.wechat-guide__arrow{font:400 44px/1 var(--font-num);margin:0 6px 12px 0}.wechat-guide strong{margin-bottom:8px;font-size:20px;display:block}.wechat-guide p{color:#ffffffbf;max-width:280px;margin:0 0 22px auto;font-size:15px;line-height:1.7}.wechat-guide button{color:#fff;cursor:pointer;background:0 0;border:1px solid #ffffff80;border-radius:999px;min-width:96px;min-height:44px}.error-page{min-height:100vh;padding:24px}.error-page>.brand-mark{flex:none}.error-page main{text-align:center;width:100%;max-width:560px;margin:18vh auto 0}.error-page__code{color:var(--orange);font:800 16px/1 var(--font-num);margin:0 0 8px}.error-page h1{margin:0 0 10px;font-size:28px}.error-page main>p:not(.error-page__code){color:var(--text-62);margin:0 0 24px;line-height:1.7}.fade-enter-active,.fade-leave-active{transition:opacity .28s}.fade-enter-from,.fade-leave-to{opacity:0}.sheet-enter-active,.sheet-leave-active{transition:opacity .22s}.sheet-enter-active .subgoal-sheet,.sheet-leave-active .subgoal-sheet{transition:transform .28s}.sheet-enter-from,.sheet-leave-to{opacity:0}.sheet-enter-from .subgoal-sheet,.sheet-leave-to .subgoal-sheet{transform:translateY(100%)}.island-enter-active,.island-leave-active{transition:transform .28s,opacity .28s}.island-enter-from,.island-leave-to{opacity:0;transform:translateY(90px)}@media (width>=768px) and (width<=1023px){.activity-article,.mobile-header{padding-left:24px;padding-right:24px}}@media (width>=1024px){.mobile-header{display:none}.desktop-header{border-bottom:1px solid var(--line);background:#fff;height:72px;display:block}.desktop-header__inner{align-items:center;gap:32px;width:min(1200px,100% - 64px);height:100%;margin:0 auto;display:flex}.brand-mark--desktop{flex:none;gap:8px;font-size:19px}.desktop-nav{flex:1;justify-content:center;align-items:center;gap:clamp(20px,3vw,36px);display:flex}.desktop-nav a{white-space:nowrap;padding:25px 0 23px;font-size:15px;font-weight:500;text-decoration:none;position:relative}.desktop-nav a:after{background:var(--ink);content:"";opacity:0;height:2px;transition:opacity .15s,transform .15s;position:absolute;bottom:19px;left:0;right:0;transform:scaleX(.4)}.desktop-nav a.is-current:after,.desktop-nav a:hover:after{opacity:1;transform:scaleX(1)}.desktop-nav a.is-current{font-weight:700}.desktop-actions{flex:none;align-items:center;gap:20px;display:flex;position:relative}.english-link{color:var(--text-45);font:400 14px/1 var(--font-num)}.desktop-download-trigger{min-height:40px;font-size:14.5px}.download-popover{z-index:50;border:1px solid var(--line);background:#fff;border-radius:16px;gap:14px;padding:16px;display:flex;position:absolute;top:50px;right:0;box-shadow:0 6px 16px #1f17121f}.download-popover a{flex-direction:column;align-items:center;gap:5px;font-size:12px;text-decoration:none;display:flex}.download-popover img{width:92px;height:92px;display:block}.activity-page{padding-top:28px}.breadcrumbs{width:660px;color:var(--text-62);white-space:nowrap;align-items:baseline;gap:8px;margin:0 auto 18px;font-size:13.5px;line-height:1.5;display:flex;overflow:hidden}.breadcrumbs a{color:inherit;text-decoration:none}.breadcrumbs span{color:#1f17124d}.breadcrumbs strong{color:var(--ink);text-overflow:ellipsis;font-weight:600;overflow:hidden}.activity-article{padding:0 0 48px}.activity-article>h1{margin-bottom:16px;font-size:32px;line-height:1.35}.activity-intro{margin-bottom:16px;font-size:17px}.activity-facts{max-width:560px}.cultivation-row{gap:10px;margin-bottom:30px}.cultivation-row__label,.subgoal-chip{font-size:14px}.content-section,.story-scene{margin-bottom:40px}.scene-kicker,.section-label{font-size:13px}.scene-heading h2{font-size:20px}.number-list p,.observation-card li,.plain-list li,.scene-description{font-size:16px}.observation-card{padding:14px 18px}.content-provenance{margin-top:44px}.desktop-record-card{border:1px solid var(--line);background:var(--warm-paper);border-radius:16px;align-items:center;gap:24px;margin:0 0 48px;padding:22px 26px;display:flex}.desktop-record-card>div:first-child{flex:1}.desktop-record-card h2{margin:0 0 4px;font-size:18px;font-weight:700}.desktop-record-card p{color:var(--text-62);margin:0;font-size:14px;line-height:1.65}.desktop-record-card__qr{flex-direction:column;flex:none;align-items:center;gap:6px;display:flex}.desktop-record-card__qr img{border-radius:4px;width:104px;height:104px;display:block}.desktop-record-card__qr span{color:var(--text-62);font-size:12px}.record-island{display:none}.site-footer{grid-template-columns:auto 1fr auto;align-items:center;gap:16px;width:100vw;margin-left:calc(330px - 50vw);padding:16px max(32px,50vw - 600px);display:grid}.site-footer__brand,.site-footer__links{margin:0}.site-footer__links{justify-content:center}.site-footer__meta{text-align:right}.subgoal-sheet{border-radius:16px;margin-bottom:24px}}@media (prefers-reduced-motion:reduce){*,:after,:before{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink)}img{max-width:100%}.section-shell{width:min(1180px,100% - 40px);margin-inline:auto}.section-stack{flex-direction:column;gap:34px;padding-block:88px;display:flex}.content-band{width:100%}.content-band--warm{background:var(--warm-paper)}.content-band--ink{background:var(--ink);color:#fff}.eyebrow{color:var(--orange-pressed);letter-spacing:.09em;text-transform:uppercase;margin:0 0 12px;font-size:13px;font-weight:800}.lead{color:var(--text-75);font-size:clamp(17px,2vw,20px);line-height:1.75}.section-heading{max-width:760px}.section-heading h2{letter-spacing:-.035em;margin:0 0 14px;font-size:clamp(30px,4vw,48px);line-height:1.2}.section-heading>p:last-child{color:var(--text-62);margin:0;font-size:17px;line-height:1.8}.button{border-radius:12px;padding-inline:18px;font-weight:800;text-decoration:none}.button--large{min-height:52px;font-size:17px}.button--outline{background:0 0;border:1px solid #1f171238}.button--paper{color:var(--ink);background:#fff}.text-link{min-height:44px;color:var(--ink);text-underline-offset:5px;align-items:center;font-weight:800;display:inline-flex}.text-link--light{color:#fff}.site-header{z-index:50;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffffff0;position:sticky;top:0}.site-header__inner{align-items:center;gap:24px;width:min(1220px,100% - 32px);min-height:68px;margin-inline:auto;display:flex}.site-header .brand-mark{flex:none;min-height:44px;font-size:18px}.site-header__actions{align-items:center;gap:8px;margin-left:auto;display:flex}.site-header .desktop-nav{flex:1;justify-content:center;gap:2px;display:flex}.site-header .desktop-nav a{min-height:44px;color:var(--text-75);border-radius:10px;align-items:center;padding:0 12px;font-size:14px;font-weight:650;text-decoration:none;display:inline-flex}.site-header .desktop-nav a:after{content:none}.site-header .desktop-nav a:hover{background:var(--warm-paper);color:var(--ink)}.site-header .desktop-nav a[aria-current=page]{color:var(--ink);background:#fff0e2;font-weight:750}.icon-button{cursor:pointer;background:0 0;border:0;border-radius:12px;justify-content:center;align-items:center;width:44px;height:44px;padding:0;font-size:22px;display:inline-flex}.menu-button,.mobile-menu,.mobile-share{display:none}.site-footer{border-top:1px solid var(--line);background:var(--paper);width:100%;margin:0;padding:0;display:block}.site-footer__inner{grid-template-columns:1fr auto;gap:26px 48px;width:min(1180px,100% - 40px);margin-inline:auto;padding:54px 0 36px;display:grid}.site-footer__brand{align-items:center;gap:10px;margin:0;display:flex}.site-footer__brand div{flex-direction:column;gap:2px;display:flex}.site-footer__brand strong{font-size:17px}.site-footer__brand span{color:var(--text-50);font-size:13px}.site-footer__links{flex-wrap:wrap;justify-content:flex-end;gap:0 18px;margin:0;display:flex}.site-footer__links a{color:var(--text-62);font-size:13px;text-decoration:none}.site-footer__links a,.site-footer__meta a{align-items:center;min-height:44px;display:inline-flex}.site-footer__links a:hover{color:var(--ink);text-decoration:underline}.site-footer__meta{color:var(--text-50);text-align:left;grid-column:1/-1;margin:0;font-size:12px}.home-hero{grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);align-items:center;gap:60px;min-height:720px;display:grid}.home-hero__copy h1{letter-spacing:-.055em;max-width:720px;margin:0;font-size:clamp(48px,6vw,78px);line-height:1.06}.home-hero__copy .lead{max-width:680px;margin:24px 0 32px}.home-hero__visual{background:#ffe6c9;border-radius:42% 58% 48% 52%/44% 38% 62% 56%;justify-content:center;max-height:620px;display:flex;position:relative;overflow:hidden}.home-hero__visual img{-o-object-position:top center;object-position:top center;filter:drop-shadow(0 24px 32px #1f171226);width:min(470px,100%);height:650px}.home-narrative{width:min(640px,100% - 40px);margin-inline:auto}.home-narrative--wide{width:min(880px,100% - 40px)}.home-narrative .section-heading{max-width:640px;margin-inline:auto}.faq-preview h2,.home-narrative .section-heading h2,.home-narrative>h2{text-align:center}.home-narrative .section-heading h2{font-size:clamp(26px,1.2vw + 22px,38px);line-height:1.35}.home-science{background:#fff;padding-block:clamp(52px,7vw,96px)}.feature-section .home-narrative,.home-science .home-narrative{flex-direction:column;gap:clamp(24px,3vw,32px);display:flex}.domain-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;width:min(640px,100%);margin-inline:auto;display:grid}.domain-card{border:1px solid var(--line);background:#fff;border-radius:12px;flex-direction:column;gap:6px;min-height:0;padding:clamp(14px,2vw,20px);text-decoration:none;transition:transform .2s,box-shadow .2s;display:flex}.domain-card:hover{transform:translateY(-4px);box-shadow:0 18px 42px #1f171214}.domain-card__title{color:var(--ink);align-items:center;gap:8px;display:flex}.domain-card__title img{-o-object-fit:contain;object-fit:contain;border-radius:8px;width:30px;height:30px}.domain-card__title strong{font-size:17px}.domain-card>span:last-child{color:var(--text-62);font-size:14px;line-height:1.6}.science-callout{text-align:center;width:min(640px,100%);margin-inline:auto}.science-callout h3{margin:0 0 12px;font-size:clamp(20px,.8vw + 17px,24px)}.science-callout p{color:var(--text-62);text-align:left;margin:0 0 20px;font-size:17px;line-height:1.75}.feature-section{border-top:1px solid var(--line);background:var(--warm-paper);padding-block:clamp(52px,7vw,96px)}.feature-card{text-align:center;background:#fff;border:1px solid #efe6d6;border-radius:16px;padding:clamp(24px,4vw,40px) clamp(16px,3vw,40px);text-decoration:none;transition:transform .2s,box-shadow .2s;display:block}.feature-card:hover{transform:translateY(-3px);box-shadow:0 6px 16px #1f17121a}.feature-card__copy{padding:0}.feature-card__copy h3{letter-spacing:-.015em;max-width:680px;margin:0 auto 12px;font-size:clamp(21px,.9vw + 18px,26px);line-height:1.35}.feature-card__copy p{max-width:620px;color:var(--text-62);text-align:left;margin:0 auto 22px;font-size:17px;line-height:1.75}.feature-card__visual{aspect-ratio:9/19;background:#faf8f3;border:1px solid #efe6d6;border-radius:14px;width:clamp(210px,24vw,270px);margin-inline:auto;overflow:hidden}.feature-card__visual img{-o-object-fit:cover;object-fit:cover;-o-object-position:center top;object-position:center top;width:100%;height:100%;display:block}.home-two-tracks{text-align:center;background:#fff;padding-block:clamp(52px,7vw,96px)}.home-two-tracks h2,.principles h2{letter-spacing:-.025em;margin:0 0 18px;font-size:clamp(26px,1.2vw + 22px,38px);line-height:1.35}.home-two-tracks p{color:var(--text-62);text-align:left;margin:0 0 14px;font-size:17px;line-height:1.75}.home-two-tracks .button{margin-top:12px}.home-two-tracks .text-link{width:fit-content;color:var(--text-62);margin:8px auto 0;font-size:15px;display:flex}.principles{border-top:1px solid var(--line);background:var(--warm-paper);text-align:center;padding-block:clamp(52px,7vw,96px)}.principles h2{margin-bottom:28px}.principle-grid{text-align:left;display:block}.principle-grid article{border:0;border-top:1px solid var(--line);border-radius:0;padding:20px 0 0}.principle-grid article:first-child{border-top:0;padding-top:0}.principle-grid h3{margin:0 0 8px;font-size:clamp(19px,.7vw + 16px,22px)}.principle-grid p{color:var(--text-62);margin:0 0 20px;font-size:17px;line-height:1.75}.principles .button{margin-top:4px}.faq-preview{background:#fff;max-width:none;padding:clamp(52px,7vw,96px) 0 clamp(64px,8vw,110px)}.faq-preview h2{margin:0 0 24px;font-size:clamp(26px,1.2vw + 22px,38px)}.home-narrative--faq{width:min(720px,100% - 40px)}.faq-preview details{border-top:1px solid var(--line)}.faq-preview details:last-of-type{border-bottom:1px solid var(--line)}.faq-preview summary{cursor:pointer;justify-content:space-between;align-items:center;min-height:68px;font-size:18px;font-weight:800;list-style:none;display:flex}.faq-preview summary span:before{content:"+"}.faq-preview details[open] summary span:before{content:"−"}.faq-preview details p{color:var(--text-62);margin:0 0 24px;line-height:1.8}.hub-layout{padding-bottom:80px}.prose--hub{width:min(900px,100% - 40px);margin:0 auto;padding-block:76px 36px}.guide-directory{padding-block:54px}.guide-grid{grid-template-columns:repeat(3,1fr);gap:14px;margin-top:32px;display:grid}.guide-card{border:1px solid var(--line);border-radius:18px;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;min-height:100px;padding:20px;text-decoration:none;display:grid}.guide-card:hover{background:var(--warm-paper)}.guide-card img{border-radius:12px}.guide-card div{flex-direction:column;gap:4px;display:flex}.guide-card strong{font-size:17px}.guide-card div span{color:var(--text-50);font-size:13px}.topic-grid{grid-template-columns:repeat(2,1fr);gap:16px;margin-top:32px;display:grid}.topic-card{background:var(--warm-paper);border-radius:20px;flex-direction:column;gap:10px;padding:28px;text-decoration:none;display:flex}.topic-card strong{font-size:20px;line-height:1.45}.topic-card span{color:var(--text-62);-webkit-line-clamp:3;-webkit-box-orient:vertical;line-height:1.7;display:-webkit-box;overflow:hidden}.article-layout{width:min(920px,100% - 40px);margin-inline:auto;padding:32px 0 88px}.content-breadcrumbs{min-height:44px;color:var(--text-50);align-items:center;gap:8px;margin-bottom:18px;font-size:13px;display:flex}.content-breadcrumbs a{align-items:center;min-height:44px;display:inline-flex}.prose-card{border:1px solid var(--line);background:#fff;border-radius:28px;padding:clamp(28px,6vw,72px)}.article-icon{margin-bottom:20px}.article-icon img{border-radius:18px}.prose{color:var(--ink);overflow-wrap:anywhere;font-size:17px;line-height:1.85}.prose>:first-child{margin-top:0}.prose h1{letter-spacing:-.04em;margin:0 0 24px;font-size:clamp(38px,5vw,58px);line-height:1.18}.prose h2{letter-spacing:-.025em;margin:60px 0 18px;font-size:clamp(28px,3vw,36px);line-height:1.28}.prose h3{margin:38px 0 12px;font-size:22px;line-height:1.4}.prose ol,.prose p,.prose ul{margin-block:0 18px}.prose li{margin-block:7px}.prose a{color:#b94e0b;text-underline-offset:4px;font-weight:650}.prose blockquote{border-left:4px solid var(--orange);background:var(--warm-paper);margin:28px 0;padding:18px 22px}.prose table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}.prose td,.prose th{border:1px solid var(--line);text-align:left;vertical-align:top;padding:12px 14px}.prose pre{color:#fff;background:#211b17;border-radius:14px;padding:20px;overflow-x:auto}.article-byline{border-top:1px solid var(--line);color:var(--text-50);margin:56px 0 0;padding-top:22px;font-size:13px}.legal-document>header{border-bottom:1px solid var(--line);margin-bottom:36px;padding-bottom:28px}.legal-document>header h1{margin:0 0 14px;font-size:clamp(38px,5vw,56px)}.legal-document>header>p:last-child{color:var(--text-50);line-height:1.7}.hub-hero{grid-template-columns:1.1fr .7fr;align-items:center;gap:70px;min-height:620px;padding-block:70px;display:grid}.hub-hero h1{letter-spacing:-.05em;margin:0;font-size:clamp(46px,6vw,70px);line-height:1.08}.hub-hero .lead{margin:24px 0 32px}.hub-hero>img{-o-object-fit:contain;object-fit:contain;-o-object-position:top;object-position:top;border-radius:28px;width:min(380px,100%);max-height:520px;margin-inline:auto;box-shadow:0 22px 60px #1f17121f}.benefit-grid{grid-template-columns:repeat(3,1fr);gap:18px;padding-block:58px;display:grid}.benefit-grid article{border-left:3px solid var(--orange);padding:24px}.benefit-grid strong{font-size:18px}.benefit-grid p{color:var(--text-62);margin:8px 0 0;line-height:1.7}.age-selector{background:#fff9f0;border:1px solid #f2ddc9;border-radius:16px;gap:14px;margin:28px 0 48px;padding:12px 14px;display:flex}.age-selector__label{flex:none;font-size:14px}.age-chips{flex-wrap:wrap;flex:1;margin:0;display:flex}.age-chip{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:99px;justify-content:center;align-items:center;min-width:58px;padding:6px 13px;font-size:14px;display:inline-flex}.age-chip.is-current{border-color:var(--orange);background:var(--orange);font-weight:800}.age-section{scroll-margin-top:90px}.age-section__heading{justify-content:space-between;align-items:end;margin-bottom:24px;display:flex}.age-section__heading h3{margin:0;font-size:34px}.age-section__heading>span{color:var(--text-50);font:700 14px/1 var(--font-num)}.activity-card-grid{grid-template-columns:repeat(4,1fr);gap:16px;display:grid}.activity-card{border:1px solid var(--line);background:#fff;border-radius:20px;text-decoration:none;overflow:hidden}.activity-card>img{aspect-ratio:4/3;background:var(--warm-paper);-o-object-fit:cover;object-fit:cover;width:100%;display:block}.activity-card__body{padding:18px}.activity-card__badges,.activity-card__meta,.activity-card__tags{flex-wrap:wrap;gap:6px;display:flex}.activity-card__badges span{background:var(--warm-paper);color:var(--text-62);border-radius:99px;padding:3px 7px;font-size:11px}.activity-card h4{margin:12px 0 8px;font-size:19px;line-height:1.4}.activity-card p{color:var(--text-62);margin:0 0 12px;font-size:14px;line-height:1.65}.activity-card__meta{color:var(--text-50);justify-content:space-between;font-size:12px}.activity-card__tags{margin-top:12px}.activity-card__tags span{color:#a64508;font-size:11px}.more-activities{margin-top:28px}.more-activities__toggle{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:12px;justify-content:center;align-items:center;gap:8px;width:fit-content;min-height:44px;margin:0 auto 24px;padding:0 18px;font-weight:750;display:flex}.more-activities__toggle span{transition:transform .16s}.more-activities__toggle[aria-expanded=true] span{transform:rotate(180deg)}.more-activities__content{flex-direction:column;gap:28px;display:flex}.app-library-cta{background:#fff5e8;border:1px solid #ffd6b5;border-radius:18px;justify-content:space-between;align-items:center;gap:24px;margin-top:28px;padding:22px 24px;display:flex}.app-library-cta>div{flex-direction:column;gap:4px;display:flex}.app-library-cta>div span{color:var(--text-62);font-size:13px}.app-library-cta .button{flex:none}.empty-state,.source-fallback{background:var(--warm-paper);color:var(--text-62);border-radius:16px;padding:24px}.source-fallback{margin-top:28px;font-size:13px}.download-layout{padding-block:84px}.download-hero{max-width:820px;margin-bottom:48px}.download-hero h1{letter-spacing:-.045em;margin:0;font-size:clamp(44px,6vw,68px);line-height:1.1}.download-grid{grid-template-columns:repeat(2,1fr);gap:20px;display:grid}.download-card{border:1px solid var(--line);background:var(--warm-paper);border-radius:28px;grid-template-columns:auto 1fr;gap:22px;min-height:350px;padding:34px;display:grid;position:relative;overflow:hidden}.download-card>img:first-child{border-radius:20px}.download-card h2{margin:0 0 12px;font-size:30px}.download-card p{color:var(--text-62);line-height:1.7}.download-card small{color:var(--text-50);max-width:calc(100% - 112px);margin-top:14px;display:block}.download-card__qr{background:#fff;border-radius:10px;width:106px;height:106px;padding:4px;position:absolute;bottom:24px;right:26px}.install-note{border-top:1px solid var(--line);max-width:760px;margin:62px auto 0;padding:30px}.install-note h2{font-size:24px}.install-note p{color:var(--text-62);line-height:1.8}.app-banner{z-index:45;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffffff5;border:1px solid #1f171229;border-radius:14px;align-items:center;gap:10px;width:min(460px,100% - 32px);min-height:68px;padding:10px 10px 10px 12px;display:flex;position:fixed;bottom:16px;right:16px;box-shadow:0 12px 36px #1f171229}.app-banner img{border-radius:12px;flex:none}.app-banner__copy{flex-direction:column;flex:1;gap:3px;min-width:0;display:flex}.app-banner__copy strong{font-size:15px}.app-banner__copy span{color:var(--text-50);text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.open-app-page{background:var(--warm-paper);text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:100vh;padding:30px;display:flex}.open-app-page img{border-radius:24px}.open-app-page h1{margin:24px 0 10px;font-size:30px}.open-app-page p{max-width:460px;color:var(--text-62);margin:0 0 22px;line-height:1.7}@media (width<=900px){.site-header__inner{min-height:60px}.site-header .desktop-nav{display:none}.menu-button,.mobile-share{display:inline-flex}.header-download{min-height:42px;padding-inline:14px;font-size:13px}.mobile-menu{border-top:1px solid var(--line);background:#fff;flex-direction:column;padding:8px 16px 18px;display:flex}.mobile-menu a,.mobile-menu__language{border-bottom:1px solid var(--line);align-items:center;min-height:48px;padding-inline:8px;text-decoration:none;display:flex}.mobile-menu a[aria-current=page]{font-weight:800}.mobile-menu__language{color:var(--text-45);border-bottom:0;font-size:13px}.home-hero,.hub-hero{grid-template-columns:1fr;gap:38px;min-height:0;padding-block:54px}.home-hero__visual{max-height:520px}.activity-card-grid,.domain-grid{grid-template-columns:repeat(2,1fr)}.feature-card{grid-template-columns:1fr 1fr;min-height:470px}.guide-grid{grid-template-columns:repeat(2,1fr)}.benefit-grid,.download-grid{grid-template-columns:1fr}}@media (width<=640px){.article-layout,.section-shell{width:min(100% - 28px,1180px)}.section-stack{padding-block:64px}.site-header__inner{gap:6px;width:calc(100% - 20px)}.site-header .brand-mark{font-size:16px}.site-header .brand-mark img{width:25px;height:25px}.mobile-share{display:none}.home-hero__copy h1,.hub-hero h1{font-size:42px}.home-hero__visual{border-radius:30px;max-height:460px}.home-hero__visual img{height:500px}.domain-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.domain-card{min-height:0;padding:14px}.domain-card__title strong{font-size:17px}.domain-card>span:last-child{font-size:13px}.feature-section{padding-block:52px}.feature-card,.feature-card--reverse{grid-template-columns:1fr}.feature-card--reverse .feature-card__copy{order:0}.feature-card__copy{min-height:0;padding:0}.feature-card__visual{height:auto}.two-column-message{gap:34px;padding-block:68px}.principle-grid,.site-footer__inner,.two-column-message{grid-template-columns:1fr}.site-footer__inner{padding-top:42px}.site-footer__links{justify-content:flex-start}.site-footer__meta{grid-column:auto;line-height:1.8}.guide-grid,.topic-grid{grid-template-columns:1fr}.prose-card{border:0;border-radius:0;padding:26px 20px}.article-layout{padding-top:12px}.content-breadcrumbs{padding-inline:8px}.prose{font-size:16px}.prose h1{font-size:36px}.prose h2{margin-top:48px;font-size:27px}.hub-hero>img{max-height:440px}.activity-card-grid{grid-template-columns:1fr}.age-selector{z-index:20;border-left:0;border-right:0;border-radius:0;margin-inline:-20px;padding:10px 20px;position:sticky;top:60px;box-shadow:0 10px 24px #1f17120f}.age-selector__label{font-size:13px}.age-chips{scrollbar-width:none;flex-wrap:nowrap;padding-right:24px;overflow-x:auto}.age-chip{flex:none}.age-section{scroll-margin-top:136px}.app-library-cta{flex-direction:column;align-items:stretch;padding:20px}.app-library-cta .button{text-align:center;width:100%}.download-layout{padding-block:54px}.download-card{grid-template-columns:1fr;padding:26px}.download-card__qr{display:none}.app-banner{bottom:16px;right:16px}.app-banner__copy span{white-space:normal}}.button{border-radius:999px;justify-content:center;align-items:center;min-height:44px;padding-inline:20px;display:inline-flex}.button--large{min-height:44px;padding-inline:22px;font-size:16px}.button--outline{border:2px solid var(--orange);background:#fff}.site-footer__brand img,.site-header .brand-mark img{border-radius:9px}.site-header__actions{position:relative}.mobile-download-link{display:none}.desktop-download-trigger{cursor:pointer;min-width:104px}.download-popover{z-index:80;border:1px solid var(--line);background:#fff;border-radius:20px;grid-template-columns:repeat(2,132px);gap:14px;width:296px;padding:16px;display:grid;position:absolute;top:calc(100% + 14px);right:0;box-shadow:0 18px 54px #1f171229}.download-popover:before{border-top:1px solid var(--line);border-left:1px solid var(--line);content:"";background:#fff;width:12px;height:12px;position:absolute;top:-7px;right:42px;transform:rotate(45deg)}.download-popover>a:not(.download-popover__more){background:var(--warm-paper);text-align:center;border-radius:14px;flex-direction:column;align-items:center;gap:5px;min-height:166px;padding:10px;text-decoration:none;display:flex}.download-popover img{border-radius:8px;width:104px;height:104px}.download-popover strong{font-size:13px}.download-popover span{color:var(--text-50);font-size:11px}.download-popover__more{min-height:44px;color:var(--text-62);grid-column:1/-1;justify-content:center;align-items:center;font-size:13px;font-weight:750;text-decoration:none;display:flex}.accessible-faq{border-bottom:1px solid var(--line)}.accessible-faq__item{border-top:1px solid var(--line)}.accessible-faq__item h3{margin:0}.accessible-faq__item button{cursor:pointer;text-align:left;background:0 0;border:0;justify-content:space-between;align-items:center;gap:24px;width:100%;min-height:68px;padding:12px 0;font-size:18px;font-weight:800;display:flex}.accessible-faq__item button i{width:44px;height:44px;font:500 24px/1 var(--font-num);flex:0 0 44px;justify-content:center;align-items:center;display:inline-flex}.accessible-faq__answer p{color:var(--text-62);margin:0;padding:0 60px 24px 0;line-height:1.8}.apk-metadata{border-top:1px solid var(--line);margin:28px 0;display:grid}.apk-metadata>div{border-bottom:1px solid var(--line);grid-template-columns:180px 1fr;gap:18px;padding:14px 0;display:grid}.apk-metadata dt{color:var(--text-62);font-weight:700}.apk-metadata dd{min-width:0;margin:0}.apk-metadata code{overflow-wrap:anywhere;font:500 12px/1.7 var(--font-num)}.activity-howto__grid{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.activity-howto__grid article{background:#fff;border-radius:22px;padding:28px}.activity-howto__grid span{color:var(--orange-pressed);font:800 13px/1 var(--font-num);letter-spacing:.1em}.activity-howto__grid h3{margin:20px 0 10px;font-size:21px}.activity-howto__grid p{color:var(--text-62);margin:0;line-height:1.75}.activity-next-step{grid-template-columns:1.2fr .8fr;align-items:center;gap:70px;padding-block:92px;display:grid}.activity-next-step h2{margin:0 0 16px;font-size:clamp(34px,4vw,48px);line-height:1.2}.activity-next-step p{color:var(--text-62);margin:0;line-height:1.8}.activity-next-step>div:last-child{flex-direction:column;align-items:flex-start;gap:14px;display:flex}.home-hero{grid-template-columns:minmax(0,1.08fr) minmax(360px,.82fr);gap:54px;min-height:640px;padding-block:68px}.home-hero__copy h1{letter-spacing:-.045em;max-width:680px;font-size:clamp(48px,4.4vw,56px);line-height:1.12}.home-hero__visual{background:0 0;border-radius:0;align-items:center;max-height:none;overflow:visible}.home-hero__visual img{-o-object-fit:contain;object-fit:contain;filter:none;width:min(420px,100%);height:auto;max-height:540px}.app-banner{display:none}.age-chip{isolation:isolate;background:0 0;border:0;min-height:44px;padding:0 13px;position:relative}.age-chip:before{z-index:-1;border:1px solid var(--line);content:"";background:#fff;border-radius:99px;position:absolute;inset:6px 0}.age-chip.is-current{color:var(--ink);background:0 0;border:0}.age-chip.is-current:before{border-color:var(--orange);background:var(--orange)}.knowledge-hub-hero{text-align:center;max-width:1020px;padding-block:104px 86px}.knowledge-hub-hero h1{letter-spacing:-.045em;max-width:920px;margin:0 auto;font-size:clamp(44px,5vw,64px);line-height:1.12}.knowledge-hub-hero .lead{max-width:760px;margin:24px auto 32px}.knowledge-hub-actions{flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;display:flex}.knowledge-directory-section{scroll-margin-top:76px}.age-hub-grid{grid-template-columns:repeat(6,1fr);gap:12px;display:grid}.age-hub-card{border:1px solid var(--line);background:#fff;border-radius:20px;flex-direction:column;min-height:164px;padding:22px;text-decoration:none;transition:transform .2s,box-shadow .2s;display:flex;position:relative}.age-hub-card:hover{transform:translateY(-3px);box-shadow:0 16px 36px #1f171214}.age-hub-card>span{color:var(--orange-pressed);font:800 34px/1 var(--font-num)}.age-hub-card strong{margin-top:10px;font-size:18px}.age-hub-card small{color:var(--text-50);margin-top:5px}.age-hub-card i{margin-top:auto;font-style:normal}.domain-directory-group{grid-template-columns:150px 1fr;align-items:start;gap:30px;display:grid}.domain-directory-group h3{margin:10px 0 0;font-size:24px;position:sticky;top:96px}.domain-directory-group .guide-grid{margin-top:0}.topic-card i{margin-top:auto;padding-top:8px;font-style:normal;font-weight:800}.content-breadcrumbs.section-shell{margin-bottom:0;padding-top:18px}.content-breadcrumbs>span:last-child{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.content-detail-hero{text-align:center;max-width:960px;padding-block:64px 46px}.content-detail-hero__icon{justify-content:center;margin-bottom:18px;display:flex}.content-detail-hero__icon img{border-radius:18px}.content-detail-hero h1{letter-spacing:-.045em;margin:0 auto;font-size:clamp(42px,5vw,64px);line-height:1.16}.content-detail-hero .lead{max-width:780px;margin:24px auto 0}.content-detail-meta{color:var(--text-50);flex-wrap:wrap;justify-content:center;gap:8px 20px;margin-top:24px;font-size:13px;display:flex}.direct-answer{background:#fff6e8;border:1px solid #ffd9b7;border-radius:24px;max-width:900px;margin-bottom:48px;padding:30px 34px}.direct-answer h2{margin:0 0 12px;font-size:28px}.direct-answer .prose p:last-child{margin-bottom:0}.content-detail-grid{grid-template-columns:220px minmax(0,780px);justify-content:center;align-items:start;gap:46px;padding-bottom:96px;display:grid}.content-toc{border:1px solid var(--line);background:var(--warm-paper);border-radius:18px;flex-direction:column;gap:2px;max-height:calc(100vh - 120px);padding:20px;display:flex;position:sticky;top:96px;overflow-y:auto}.content-toc strong{margin-bottom:9px;font-size:14px}.content-toc a{min-height:38px;color:var(--text-62);border-radius:8px;align-items:center;padding:7px 8px;font-size:13px;line-height:1.45;text-decoration:none;display:flex}.content-toc a:hover{color:var(--ink);background:#fff}.content-detail-body{min-width:0}.content-detail-body .prose h2,.content-detail-body .prose h3{scroll-margin-top:96px}.content-detail-body .prose h2{border-top:1px solid var(--line);padding-top:10px}.content-detail-body .prose pre{color:var(--ink);font:750 16px/1.9 var(--font-cn);white-space:pre-wrap;background:#fff8ee;border:1px solid #f1d7bd;border-radius:18px;margin:28px 0;padding:26px;position:relative}.content-detail-body .prose pre:before{color:var(--orange-pressed);content:"流程";letter-spacing:.1em;margin-bottom:8px;font-size:12px;display:block}.product-screenshot-gallery{grid-template-columns:repeat(3,1fr);gap:14px;margin-top:64px;display:grid}.product-screenshot-gallery figure{background:#f4eadc;border-radius:24px;justify-content:center;align-items:flex-start;height:480px;margin:0;padding:16px;display:flex;overflow:hidden}.product-screenshot-gallery img{-o-object-fit:contain;object-fit:contain;-o-object-position:top center;object-position:top center;width:100%;height:100%}.related-content{padding-bottom:96px}.related-content h2{margin:0 0 24px;font-size:34px}.related-content__grid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.related-content__grid a{border:1px solid var(--line);background:#fff;border-radius:20px;flex-direction:column;min-height:190px;padding:24px;text-decoration:none;display:flex}.related-content__grid strong{font-size:19px;line-height:1.5}.related-content__grid span{color:var(--text-62);margin-top:8px;line-height:1.65}.related-content__grid i{margin-top:auto;padding-top:16px;font-style:normal;font-weight:800}@media (width<=1000px){.age-hub-grid{grid-template-columns:repeat(4,1fr)}.content-detail-grid{grid-template-columns:minmax(0,780px)}.content-toc{max-height:none;position:static}}@media (width<=900px){.desktop-download-trigger{display:none}.mobile-download-link{min-height:44px;display:inline-flex}.app-banner{display:flex}.home-hero{grid-template-columns:1fr}}@media (width<=700px){.apk-metadata>div{gap:5px}.activity-howto__grid,.activity-next-step,.apk-metadata>div{grid-template-columns:1fr}.activity-next-step{gap:28px;padding-block:68px}.home-hero{gap:26px;padding-block:40px 48px}.home-hero__copy{min-width:0}.home-hero__copy h1{letter-spacing:-.035em;font-size:36px;line-height:1.15}.home-hero__copy .lead{margin:20px 0 26px}.home-hero__visual{border-radius:0;max-height:none}.home-hero__visual img{width:min(300px,88%);height:auto;max-height:380px}.home-narrative,.home-narrative--faq,.home-narrative--wide{width:min(100% - 32px,880px)}.knowledge-hub-hero{text-align:left;padding-block:64px 54px}.knowledge-hub-hero h1{font-size:38px}.knowledge-hub-hero .lead{margin-inline:0}.knowledge-hub-actions{flex-direction:column;justify-content:flex-start;align-items:stretch}.knowledge-hub-actions .button{width:100%}.age-hub-grid{grid-template-columns:repeat(2,1fr);gap:10px}.age-hub-card{min-height:144px;padding:18px}.domain-directory-group{grid-template-columns:1fr;gap:14px}.domain-directory-group h3{position:static}.content-detail-hero{text-align:left;padding-block:44px 34px}.content-detail-hero__icon{justify-content:flex-start}.content-detail-hero h1{font-size:36px}.content-detail-hero .lead{margin-inline:0;font-size:17px}.content-detail-meta{justify-content:flex-start}.direct-answer{width:calc(100% - 28px);padding:24px 20px}.content-detail-grid{gap:28px;width:calc(100% - 28px);padding-bottom:68px}.content-toc{padding:16px}.content-detail-body .prose h2{font-size:28px}.product-screenshot-gallery{grid-template-columns:1fr}.product-screenshot-gallery figure{height:560px}.related-content{padding-bottom:68px}.related-content__grid{grid-template-columns:1fr}.download-card small{max-width:none}}h1,h2,h3{text-wrap:balance}.home-hero__copy h1 span{display:block}.domain-directory-group{scroll-margin-top:92px}.content-toc--mobile{display:none}.faq-group,.faq-help,.product-journey__section{scroll-margin-top:92px}.faq-group+.faq-group,.faq-help{margin-top:60px}.faq-group>h2,.faq-help>h2{margin:0 0 18px;font-size:clamp(27px,3vw,34px);line-height:1.3}.accessible-faq__answer .prose{color:var(--text-62);padding:0 60px 24px 0}.accessible-faq__answer .prose p{padding:0}.product-journey{flex-direction:column;gap:68px;display:flex}.product-journey__section{grid-template-columns:minmax(0,1fr) minmax(240px,.72fr);align-items:start;gap:42px;display:grid}.product-journey__section:nth-child(2n) .product-journey__copy{order:2}.product-journey__copy h2{margin:0 0 18px;font-size:clamp(28px,3vw,36px);line-height:1.3}.product-journey__copy .prose h3:first-child{margin-top:0}.product-journey__media{gap:14px;display:grid}.product-journey__media--steps{grid-column:1/-1;grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}.product-journey__media figure{background:#f5eadc;border-radius:22px;margin:0;padding:14px}.product-journey__media img{-o-object-fit:contain;object-fit:contain;-o-object-position:top center;object-position:top center;width:100%;max-height:540px;display:block}.product-journey__media figcaption{color:var(--text-62);margin-top:10px;font-size:13px;line-height:1.55}.how-it-works-entry-grid{grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:54px;display:grid}.how-it-works-entry-grid a{border:1px solid var(--line);border-radius:20px;flex-direction:column;gap:8px;min-width:0;padding:14px;text-decoration:none;display:flex}.how-it-works-entry-grid img{background:var(--warm-paper);-o-object-fit:contain;object-fit:contain;-o-object-position:top;object-position:top;border-radius:12px;width:100%;height:260px}.how-it-works-entry-grid strong{font-size:17px;line-height:1.45}.how-it-works-entry-grid span{color:var(--text-62);font-size:14px;line-height:1.6}.how-it-works-entry-grid i{margin-top:auto;font-size:13px;font-style:normal;font-weight:800}.app-hub-hero{grid-template-columns:minmax(0,1fr) minmax(340px,.72fr);align-items:center;gap:70px;min-height:620px;padding-block:72px;display:grid}.app-hub-hero h1{letter-spacing:-.045em;max-width:720px;margin:0;font-size:clamp(46px,5vw,66px);line-height:1.1}.app-hub-hero .lead{max-width:700px;margin:24px 0 18px}.app-hub-hero__screens{justify-content:center;align-items:center;gap:0;min-height:500px;display:flex}.app-hub-hero__screens img{-o-object-fit:contain;object-fit:contain;border-radius:20px;width:min(230px,54%);max-height:500px;box-shadow:0 20px 50px #1f17121f}.app-hub-hero__screens img:last-child{margin:48px 0 0 -50px}.app-task-section{padding-block:88px}.app-task-list{flex-direction:column;gap:22px;display:flex}.app-task-card{background:#fff;border:1px solid #eadfce;border-radius:28px;grid-template-columns:minmax(0,1fr) minmax(260px,.65fr);min-height:420px;display:grid;position:relative;overflow:hidden}.app-task-card--reverse{grid-template-columns:minmax(260px,.65fr) minmax(0,1fr)}.app-task-card--reverse .app-task-card__copy{order:2}.app-task-card__copy{flex-direction:column;justify-content:center;align-items:flex-start;padding:clamp(30px,5vw,64px);display:flex}.app-task-card__copy>span{color:var(--orange-pressed);font:800 13px/1 var(--font-num);letter-spacing:.12em}.app-task-card h3{max-width:600px;margin:18px 0 12px;font-size:clamp(28px,3vw,40px);line-height:1.2}.app-task-card p{max-width:590px;color:var(--text-62);margin:0 0 20px;font-size:17px;line-height:1.75}.app-task-card__main{text-underline-offset:5px;align-items:center;min-height:44px;font-weight:850;display:inline-flex}.app-task-card__main:after{z-index:1;content:"";position:absolute;inset:0}.app-task-card__secondary{z-index:2;min-height:44px;color:var(--text-62);align-items:center;font-size:14px;font-weight:750;display:inline-flex;position:relative}.app-task-card figure{background:#f5eadc;justify-content:center;align-items:flex-start;min-width:0;margin:0;padding:28px 28px 0;display:flex;overflow:hidden}.app-task-card figure img{-o-object-fit:contain;object-fit:contain;-o-object-position:top center;object-position:top center;width:min(280px,100%);height:100%;max-height:500px}.app-hub-connection{grid-template-columns:1fr 1fr;align-items:center;gap:72px;padding-block:96px;display:grid}.app-hub-connection h2{margin:0 0 18px;font-size:clamp(34px,4vw,50px);line-height:1.2}.app-hub-connection p{color:var(--text-62);font-size:17px;line-height:1.8}.app-hub-connection ol{margin:0;padding:0;list-style:none}.app-hub-connection li{border-top:1px solid var(--line);flex-direction:column;gap:6px;padding:22px 0;display:flex}.app-hub-connection li:last-child{border-bottom:1px solid var(--line)}.app-hub-connection li span{color:var(--text-62);line-height:1.6}.app-fact-panel{padding-block:78px}.app-fact-panel ul{grid-template-columns:repeat(3,1fr);gap:14px;margin:32px 0 22px;padding:0;list-style:none;display:grid}.app-fact-panel li{background:#fff;border-radius:18px;flex-direction:column;justify-content:center;min-height:130px;padding:22px;font-size:17px;font-weight:800;line-height:1.55;display:flex}.app-fact-panel li small{color:var(--text-50);margin-top:8px;font-size:12px;font-weight:500}.app-fact-panel>p{max-width:760px;color:var(--text-62);line-height:1.75}.activity-browser{padding-block:56px 88px}.age-selector{grid-template-columns:150px 1fr;align-items:center;gap:12px 18px;margin:0 0 34px;padding:16px 18px;display:grid}.age-selector__label{align-items:center;min-height:44px;display:flex}.age-selector small{color:var(--text-50);grid-column:2;line-height:1.55}.age-chips{grid-template-columns:repeat(7,minmax(72px,1fr));gap:6px;width:100%;display:grid}.age-chip{width:100%;min-width:0;padding-inline:8px}.age-section__heading{margin-bottom:18px;display:block}.age-section__heading h2{letter-spacing:-.02em;text-wrap:balance;margin:0;font-size:24px;line-height:1.35}.activity-card-grid--hub{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.activity-card{transition:transform .16s,box-shadow .16s}.activity-card:hover{transform:translateY(-2px);box-shadow:0 14px 34px #1f171214}.activity-hub-card{border-radius:12px;padding:16px;display:block}.activity-hub-card__chips{align-items:center;gap:6px;min-width:0;display:flex}.activity-hub-card__age{color:var(--text-62);white-space:nowrap;background:#f5f5f5;border:1px solid #d9d9d9;padding:1px 10px}.activity-hub-card__age,.activity-hub-card__subdomain{border-radius:99px;align-items:center;min-height:22px;font-size:12px;line-height:1;display:inline-flex}.activity-hub-card__subdomain{gap:4px;min-width:0;padding:1px 9px 1px 1px}.activity-hub-card__subdomain img{-o-object-fit:cover;object-fit:cover;border-radius:50%;flex:none;width:20px;height:20px}.activity-hub-card__subdomain>span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.activity-hub-card__subdomain.is-domain-m{color:#39733d;background:#edf8eb}.activity-hub-card__subdomain.is-domain-c{color:#8a5818;background:#fff2dc}.activity-hub-card__subdomain.is-domain-s{color:#945060;background:#fdeef1}.activity-hub-card__subdomain.is-domain-l{color:#356d88;background:#eaf5fb}.activity-hub-card__main{align-items:flex-start;gap:12px;margin-top:12px;display:flex}.activity-hub-card__cover{aspect-ratio:4/3;background:var(--warm-paper);border-radius:16px;flex:none;width:144px;display:block;position:relative;overflow:hidden}.activity-hub-card__cover:after{content:"";pointer-events:none;background:#fff3;position:absolute;inset:0}.activity-hub-card__cover img{-o-object-fit:cover;object-fit:cover;width:100%;height:100%;display:block}.activity-hub-card__copy{flex-direction:column;flex:1;gap:8px;min-width:0;display:flex}.activity-hub-card__copy strong{color:var(--text);-webkit-line-clamp:2;font-size:18px;font-weight:700;line-height:1.4}.activity-hub-card__copy strong,.activity-hub-card__copy>span{-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.activity-hub-card__copy>span{color:var(--text-62);-webkit-line-clamp:3;font-size:14px;line-height:1.55}.activity-hub-card__tags{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.activity-hub-card__tags span{color:#a64508;background:#fff0e4;border-radius:4px;padding:4px 8px;font-size:12px;line-height:1.25}.activity-hub-card__meta{color:var(--text-62);margin-top:12px;font-size:13px}.activity-fact-date{color:var(--text-50);text-align:center;font-size:13px}.more-activities__content{gap:24px;margin-top:16px}.more-activities__toggle{margin:20px auto 0}.activity-app-button{text-align:center;align-self:center;min-height:48px}@media (width<=1000px){.age-chips{grid-template-columns:repeat(4,minmax(72px,1fr))}.app-task-card,.app-task-card--reverse{grid-template-columns:1fr minmax(240px,.65fr)}.app-task-card--reverse .app-task-card__copy{order:0}}@media (width<=700px){.home-hero__copy h1 span{display:inline}.home-hero__copy h1 span:first-child:after{content:"\a ";white-space:pre}.content-toc--desktop{display:none}.content-toc--mobile{border:1px solid var(--line);background:var(--warm-paper);border-radius:14px;margin:0 0 28px;padding:0;display:block}.content-toc--mobile summary{cursor:pointer;align-items:center;min-height:48px;padding:0 16px;font-weight:800;display:flex}.content-toc--mobile nav{flex-direction:column;padding:0 8px 10px;display:flex}.content-toc--mobile a{min-height:44px}.accessible-faq__answer .prose{padding-right:0}.product-journey{gap:52px}.product-journey__section{grid-template-columns:1fr;gap:22px}.product-journey__section:nth-child(2n) .product-journey__copy{order:0}.product-journey__media--steps{grid-column:auto;grid-template-columns:1fr}.how-it-works-entry-grid{grid-template-columns:1fr}.how-it-works-entry-grid img{height:360px}.app-hub-hero{grid-template-columns:1fr;gap:28px;min-height:0;padding-block:52px 44px}.app-hub-hero h1{font-size:38px}.app-hub-hero__screens{min-height:330px}.app-hub-hero__screens img{max-height:340px}.app-task-section{padding-block:62px}.app-task-card,.app-task-card--reverse{grid-template-columns:1fr;min-height:0}.app-task-card--reverse .app-task-card__copy,.app-task-card__copy{order:0;padding:28px 22px}.app-task-card h3{font-size:27px}.app-task-card figure{height:340px;padding:22px 22px 0}.app-hub-connection{gap:34px;padding-block:68px}.app-fact-panel ul,.app-hub-connection{grid-template-columns:1fr}.app-fact-panel li{min-height:100px}.activity-hub .hub-hero{padding-block:42px 28px}.activity-hub .hub-hero>img{display:none}.activity-browser{padding-block:28px 68px}.age-selector{box-shadow:none;background:0 0;border:0;border-radius:0;margin:0 0 24px;padding:0;display:block;position:static}.age-selector__label{min-height:0;margin-bottom:10px;font-size:13px}.age-chips{grid-template-columns:repeat(7,minmax(0,1fr));gap:4px;padding:0;overflow:visible}.age-chip{min-width:0;padding:0 2px;font-size:12px}.age-section{scroll-margin-top:76px}.age-section__heading{margin-bottom:14px}.age-section__heading h2{font-size:21px}.activity-card-grid--hub,.more-activities__content .activity-card-grid--hub{grid-template-columns:1fr;gap:12px}.activity-hub-card{border-radius:12px;padding:12px}.activity-hub-card__cover{border-radius:14px;width:min(38vw,132px)}.activity-hub-card__copy strong{font-size:16px}.activity-hub-card__copy>span{font-size:13px;line-height:1.5}.activity-app-button{white-space:normal;width:100%;min-height:52px;padding-block:8px}}@media (width<=370px){.age-chips{grid-template-columns:repeat(7,minmax(0,1fr))}}