@charset "UTF-8";
:root{--ink:#172b29;--muted:#586b65;--brand:#087f70;--mint:#e8f5ee;--paper:#fafbf8;--line:#dce5df;--deep:#073d39;--lavender:#f0edfa;--wrap:1200px;color-scheme:light;scroll-behavior:smooth}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;font-size:17px;line-height:1.8;-webkit-font-smoothing:antialiased}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}button,summary{font:inherit}button,a,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}h1,h2,h3,p,figure,ol,ul{margin:0}h1,h2,h3{text-wrap:balance;line-height:1.3;letter-spacing:-.035em}h1{font-size:clamp(40px,4vw,58px);font-weight:750}h2{font-size:clamp(30px,3vw,42px);font-weight:700}h3{font-size:22px;font-weight:650}p{color:var(--muted)}:focus-visible{outline:3px solid #684fbd;outline-offset:5px}section[id],div[id]{scroll-margin-top:112px}.wrap{width:min(var(--wrap),calc(100% - 64px));margin-inline:auto}.narrow{max-width:840px}.section{padding-block:100px}.eyebrow{font-size:12px;font-weight:750;line-height:1.5;letter-spacing:.14em;color:var(--brand);margin-bottom:24px}.lead{font-size:20px;line-height:1.85}.fine{font-size:13px;line-height:1.75}.actions{display:flex;align-items:center;gap:28px;flex-wrap:wrap;margin-top:32px}.text-link{display:inline-flex;gap:12px;align-items:center;min-height:44px;color:var(--brand);font-weight:650;text-decoration-thickness:1px;text-underline-offset:6px}.text-link:hover{text-decoration:underline}.button{display:inline-flex;align-items:center;justify-content:center;gap:20px;min-height:52px;padding:12px 24px;border:1px solid var(--brand);border-radius:12px;background:var(--brand);color:white;font-size:16px;font-weight:650;transition:background .16s}.button:hover{background:var(--deep)}.button-secondary{background:transparent;color:var(--brand)}.button-secondary:hover{color:white}.store-badge{display:inline-block;flex-shrink:0;min-height:52px}.store-badge img{width:142px;height:52px;object-fit:contain}.skip{position:fixed;z-index:100;top:8px;left:16px;padding:10px 20px;background:white;transform:translateY(-150%);box-shadow:0 4px 16px #172b2920}.skip:focus{transform:none}
.site-header{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid #e8ede9}.header-inner{height:88px;display:flex;align-items:center;gap:40px}.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;font-size:23px;font-weight:750;letter-spacing:.02em}.brand img{border-radius:11px;box-shadow:0 2px 4px #172b2910}.desktop-nav{display:flex;gap:32px;margin-left:auto;font-size:15px}.desktop-nav a{min-height:44px;display:flex;align-items:center}.desktop-nav a:hover,.desktop-nav [aria-current]{color:var(--brand)}.header-download{padding:9px 16px;border-radius:10px;background:var(--mint);font-size:14px;font-weight:650;color:var(--brand);white-space:nowrap}.mobile-menu{display:none}
.hero{display:grid;grid-template-columns:1.5fr 1fr;align-items:center;gap:40px;min-height:800px;padding-block:60px 74px}.hero .eyebrow{margin-bottom:12px}.version-line{display:flex;align-items:center;gap:10px;color:var(--brand);font-size:13px;margin-bottom:32px}.status-dot{width:7px;height:7px;background:var(--brand);border-radius:100%}.divider{color:#84928c;margin-inline:4px}.hero h1{margin-bottom:26px;line-height:1.32;letter-spacing:-.055em}.hero h1 span,.mini-hero h1 span{color:var(--brand)}.hero .fine{margin-top:18px}.hero-visual{position:relative;text-align:center}.image-stage{padding:24px 34px 0;position:relative;isolation:isolate}.image-stage:before{content:"";position:absolute;inset:64px 0 56px;background:var(--lavender);border-radius:120px 120px 48px 48px;z-index:-1}.phone-screen{border:5px solid #243632;border-radius:30px;box-shadow:0 28px 50px -25px #173d3e55;background:white;width:286px;margin:auto}.visual-tag{display:block;width:max-content;max-width:95%;margin:14px auto 0;position:relative;padding:10px 18px;color:var(--deep);border:1px solid #dce5df;border-radius:10px;background:white;font-size:12px;box-shadow:0 6px 20px #213e3d12}.image-caption{font-size:11px;margin-top:16px}
.intro-band{background:white;border-block:1px solid var(--line);padding-block:80px}.section-heading{margin-bottom:48px}.section-heading .eyebrow{margin-bottom:16px}.three-steps{list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:48px}.three-steps li+li{border-left:1px solid var(--line);padding-left:40px}.step-num{display:block;font-size:15px;font-weight:600;font-variant-numeric:tabular-nums;color:var(--brand);margin-bottom:24px}.three-steps h3{margin-bottom:14px}.three-steps p{font-size:16px}.feature-panel{border-radius:32px;overflow:hidden;display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:64px;padding:72px 80px;background:var(--mint)}.feature-copy h2{margin-bottom:24px}.feature-copy>p{max-width:430px}.feature-copy .fine{margin:24px 0 10px}.check-list{list-style:none;margin-top:28px;padding:0;font-size:16px;color:var(--ink)}.check-list li{margin-bottom:10px;padding-left:25px;position:relative}.check-list li:before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:700}.feature-device .phone-screen{width:252px}.feature-device figcaption{font-size:12px;text-align:center;margin-top:20px;color:var(--muted)}.heading-row{display:flex;align-items:flex-end;justify-content:space-between;gap:40px}.heading-row>div:last-child>p{font-size:17px}.gallery-section{padding-top:4px}.gallery-controls{display:flex;gap:12px;margin-top:18px}.gallery-controls button{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--line);background:white;border-radius:50%;color:var(--ink);font-size:22px;transition:background .15s}.gallery-controls button:hover{background:var(--mint)}.gallery-controls button:disabled{opacity:.35;cursor:default}.screenshot-gallery{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x proximity;padding-bottom:24px;scrollbar-color:#b6c7bd transparent;scrollbar-width:thin}.screenshot-gallery figure{flex:0 0 calc((100% - 72px)/4);min-width:220px;scroll-snap-align:start}.screenshot-gallery img{width:100%;border:1px solid #d7ded6;border-radius:18px}.screenshot-gallery figcaption{font-size:14px;color:var(--ink);margin-top:18px;display:flex;gap:14px;line-height:1.7}.screenshot-gallery figcaption span{font-size:12px;color:var(--brand);font-variant-numeric:tabular-nums}.gallery-note{margin-top:16px;max-width:880px}
.share-band{background:var(--deep);padding-block:88px;color:white}.share-band .eyebrow{color:#81d0b5}.share-band h2{font-size:46px}.share-band p{color:#bcd9d1}.share-band .text-link{color:#c6edde;margin-top:16px}.share-flow{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin:56px 0 30px;padding:0}.share-flow li{padding-top:24px;border-top:1px solid #47736b;display:grid;grid-template-columns:42px 1fr;column-gap:12px}.share-flow span{grid-row:span 2;color:#84b6a8;font-size:13px}.share-flow strong{font-size:20px}.share-flow p{font-size:14px;margin-top:8px}.pathways{display:grid;grid-template-columns:1fr 1fr;gap:24px}.pathways article{position:relative;overflow:hidden;padding:48px;border-radius:24px;background:#eaf0e2}.pathways article.path-teacher{background:var(--lavender)}.pathways p:not(.eyebrow){max-width:380px;margin:24px 0}.pathways h2{font-size:34px}.pathways .text-link{position:relative;z-index:1}.path-mark{position:absolute;right:24px;bottom:-50px;font-weight:800;font-size:180px;opacity:.045;pointer-events:none}.voice-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;gap:48px;justify-content:space-between;align-items:center;padding-block:44px}.voice-strip h2{font-size:26px;margin-bottom:12px}.voice-strip .eyebrow{margin-bottom:14px}.voice-strip p{font-size:15px}.voice-strip .button{white-space:nowrap}.closing{padding-block:100px;text-align:center}.closing>img{margin:0 auto 24px;border-radius:18px}.closing .eyebrow{margin-bottom:20px}.closing h2{margin-bottom:32px}.closing .fine{margin-top:24px}
.site-footer{border-top:1px solid var(--line);background:#f1f4ed;padding-top:56px;font-size:14px}.footer-top{display:flex;justify-content:space-between;gap:48px}.footer-top>div>p{margin-top:16px}.footer-top nav{display:grid;grid-template-columns:repeat(3,1fr);gap:56px}.footer-top nav>div{display:flex;flex-direction:column;align-items:flex-start}.footer-top nav strong{margin-bottom:14px;font-size:14px}.footer-top nav a{font-size:13px;color:var(--muted);line-height:2;min-height:36px;display:flex;align-items:center}.footer-top a:hover{text-decoration:underline;text-underline-offset:4px}.footer-bottom{display:flex;gap:20px;justify-content:space-between;padding-block:24px;border-top:1px solid var(--line);margin-top:40px;color:var(--muted);font-size:12px}
.mini-hero{display:grid;grid-template-columns:1.15fr 1fr;align-items:center;gap:100px;padding-block:92px}.mini-hero h1{font-size:64px;line-height:1.3;margin-bottom:24px}.mini-hero .fine{margin-top:20px}.mini-poster{background:var(--mint);border-radius:32px;padding:52px 40px;text-align:center;transform:rotate(2deg);border:1px solid #d6e6dc}.mini-poster>img{margin:0 auto 30px;border-radius:24px;transform:rotate(-2deg)}.poster-small{font-size:24px;color:var(--deep);font-weight:600;line-height:1.6}.poster-words{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:36px 0 24px}.poster-words span{font-size:26px;font-weight:650;padding:12px;background:#ffffffb0;border-radius:12px;color:var(--brand)}.mini-poster .fine{font-size:11px}.split{display:grid;grid-template-columns:1fr 1fr;gap:64px}.split article+article{border-left:1px solid var(--line);padding-left:64px}.large-number{font-size:44px;letter-spacing:-.05em;display:block;margin-bottom:26px;color:var(--brand);font-weight:650}.split h3{margin-bottom:18px}.mini-benefits .note{margin-block:36px 18px}.open-section{background:var(--deep);color:white;padding-block:84px}.open-section .eyebrow{color:#81d0b5}.open-section p{color:#c4ddd6}.open-section .lead{margin:24px 0 12px}.open-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:100px}.open-instructions{padding:36px 40px;border-radius:24px;border:1px solid #538077;background:#124a43}.open-brand{display:flex;align-items:center;gap:20px;margin-bottom:32px}.open-brand img{border-radius:18px}.open-brand strong{display:block;font-size:26px}.open-brand span{font-size:14px;color:#c4ddd6}.open-instructions ol{padding-left:24px;font-size:18px}.open-instructions li{padding-left:8px;margin:14px 0}.open-instructions .fine{margin-top:26px}
.editorial-hero{padding-block:40px 80px;border-bottom:1px solid var(--line);background:var(--mint)}.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:64px}.breadcrumb a{text-decoration:underline;text-underline-offset:4px}.editorial-hero .eyebrow{margin-bottom:24px}.editorial-hero .eyebrow span{font-weight:500;letter-spacing:.04em;margin-left:12px}.editorial-hero h1{max-width:900px;font-size:52px;margin-bottom:28px}.editorial-hero .lead{max-width:820px;font-size:20px}.editorial-hero .button{margin-top:32px}.article-body .section{padding-block:64px}.article-body .section+.section{border-top:1px solid var(--line)}.article-body h2{font-size:32px;margin-bottom:28px}.article-body h3{font-size:21px}.article-body p+p{margin-top:18px}.article-body .text-link{margin-top:18px}.feature-list{padding:0;list-style:none;display:grid;gap:28px}.feature-list li{padding-left:24px;border-left:3px solid #b7d6c9}.feature-list h3{margin-bottom:8px}.steps{list-style:none;counter-reset:steps;padding:0;display:grid;gap:32px}.steps>li{counter-increment:steps;position:relative;padding-left:64px}.steps>li:before{content:counter(steps,decimal-leading-zero);position:absolute;top:0;left:0;width:40px;height:40px;border-radius:50%;background:var(--mint);display:grid;place-items:center;font-size:14px;color:var(--brand);font-weight:650}.steps h3{margin-bottom:10px}.note{padding:20px 24px;border-radius:12px;background:#eef2e9;font-size:14px;line-height:1.8}.article-body .note{margin-top:28px}.faq{margin-top:28px}.faq details{border-bottom:1px solid var(--line);padding:8px 0}.faq summary{position:relative;list-style:none;cursor:pointer;padding:16px 40px 16px 0;font-weight:650;font-size:18px;color:var(--ink)}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"＋";position:absolute;right:4px;font-size:22px;top:14px;color:var(--brand)}.faq details[open] summary:after{content:"−"}.faq details p{padding:0 40px 22px 0;font-size:16px}.faq+p{margin-top:28px}
@media(min-width:1500px){.hero{min-height:820px}.hero h1{font-size:60px}}
@media(max-width:1050px){.header-inner{gap:22px}.desktop-nav{gap:20px}.hero{gap:16px;grid-template-columns:1.25fr 1fr;min-height:720px}.hero h1{font-size:44px}.hero .lead{font-size:18px}.phone-screen{width:250px}.image-stage{padding-inline:20px}.feature-panel{padding:56px 48px;gap:44px}.three-steps{gap:24px}.three-steps li+li{padding-left:24px}.footer-top nav{gap:32px}.pathways article{padding:36px}.mini-hero{gap:60px}.mini-hero h1{font-size:50px}.mini-poster{padding:40px 24px}.open-grid{gap:40px}.editorial-hero h1{font-size:46px}}
@media(max-width:760px){.wrap{width:calc(100% - 40px)}.site-header .wrap{width:calc(100% - 40px)}.header-inner{height:72px;justify-content:space-between;gap:16px}.brand{font-size:21px;gap:10px}.brand img{width:38px;height:38px;border-radius:10px}.desktop-nav,.header-download{display:none}.mobile-menu{display:block}.mobile-menu summary{list-style:none;cursor:pointer;display:flex;gap:18px;align-items:center;font-size:14px;padding:10px 0 10px 16px;min-height:44px}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu nav{position:absolute;top:71px;left:0;right:0;padding:12px 20px 24px;background:white;box-shadow:0 14px 20px #172b2910;border-bottom:1px solid var(--line)}.mobile-menu nav a{display:block;padding:12px 4px;min-height:48px;border-bottom:1px solid #eef2ed}.mobile-menu[open] summary span{transform:rotate(45deg)}h1{font-size:36px}h2{font-size:30px}h3{font-size:20px}.eyebrow{font-size:10px;letter-spacing:.12em;margin-bottom:20px}.lead{font-size:18px}.section{padding-block:64px}.hero{grid-template-columns:1fr;gap:36px;padding-block:48px 50px;min-height:0}.hero h1{font-size:36px;line-height:1.38;letter-spacing:-.055em;margin-bottom:20px}.hero .lead{font-size:17px;line-height:1.9}.desktop-break{display:none}.version-line{font-size:12px;margin-bottom:26px}.hero .actions{gap:20px;margin-top:28px}.hero .text-link{font-size:14px}.hero .fine{font-size:11px;margin-top:20px}.image-stage{width:min(100%,340px);margin:auto;padding:16px 30px 0}.image-stage:before{inset:44px 0 44px;border-radius:90px 90px 30px 30px}.phone-screen{width:246px;border-radius:26px;border-width:4px}.visual-tag{font-size:11px}.image-caption{font-size:10px}.intro-band{padding-block:56px}.section-heading{margin-bottom:32px}.three-steps{grid-template-columns:1fr;gap:28px}.three-steps li{position:relative;padding-left:44px}.three-steps li+li{border-left:0;border-top:1px solid var(--line);padding:28px 0 0 44px}.step-num{position:absolute;left:0;top:0;margin:0;font-size:12px}.three-steps li+li .step-num{top:28px}.three-steps h3{font-size:20px;margin-bottom:10px}.three-steps p{font-size:15px}.feature-panel{grid-template-columns:1fr;padding:36px 24px;gap:36px;border-radius:22px}.feature-copy p{font-size:16px}.feature-copy .fine{font-size:12px}.check-list{font-size:15px;margin-top:24px}.feature-device .phone-screen{width:232px}.feature-device figcaption{font-size:11px}.heading-row{display:block}.heading-row>div:last-child>p{margin-top:24px;font-size:16px}.gallery-controls{margin-top:20px}.screenshot-gallery{gap:16px;padding-bottom:20px}.screenshot-gallery figure{flex-basis:76%;min-width:0}.screenshot-gallery figcaption{font-size:13px;gap:10px;margin-top:14px}.gallery-note{font-size:11px}.share-band{padding-block:56px}.share-band h2{font-size:32px}.share-flow{grid-template-columns:1fr;gap:22px;margin:36px 0 26px}.share-flow li{padding-top:20px;grid-template-columns:32px 1fr}.share-flow strong{font-size:18px}.share-flow p{font-size:13px}.share-band .fine{font-size:12px}.pathways{grid-template-columns:1fr;gap:20px}.pathways article{padding:32px}.pathways h2{font-size:29px}.pathways p:not(.eyebrow){font-size:15px;margin:20px 0}.voice-strip{display:block;padding-block:32px}.voice-strip h2{font-size:25px}.voice-strip .button{margin-top:24px}.closing{padding-block:64px}.closing h2{font-size:30px}.closing .fine{font-size:12px}.site-footer{padding-top:40px}.footer-top{display:block}.footer-top nav{margin-top:32px;grid-template-columns:1fr 1fr;gap:28px 16px}.footer-top nav a{min-height:44px;font-size:13px}.footer-top nav strong{margin-bottom:6px}.footer-top>div>p{font-size:13px}.footer-bottom{display:block;font-size:11px;margin-top:32px}.footer-bottom a{display:block;margin-top:10px;min-height:32px}.mini-hero{grid-template-columns:1fr;gap:40px;padding-block:52px}.mini-hero h1{font-size:42px}.mini-hero .lead{font-size:18px}.mini-hero .actions{gap:12px}.mini-hero .button{font-size:15px;padding:12px 18px}.mini-hero .fine{font-size:12px}.mini-poster{margin:8px 6px;padding:36px 24px;transform:rotate(1deg);border-radius:24px}.mini-poster>img{width:80px;height:80px;border-radius:20px}.poster-small{font-size:23px}.poster-words{gap:12px;margin-top:30px}.poster-words span{font-size:23px}.split{grid-template-columns:1fr;gap:32px}.split article+article{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:32px}.large-number{font-size:36px;margin-bottom:18px}.split p{font-size:16px}.mini-benefits .note{font-size:12px}.open-section{padding-block:56px}.open-grid{grid-template-columns:1fr;gap:32px}.open-section .lead{font-size:18px}.open-section p{font-size:15px}.open-instructions{padding:28px 24px;border-radius:20px}.open-brand img{width:60px;height:60px;border-radius:16px}.open-brand strong{font-size:24px}.open-instructions ol{font-size:16px}.open-instructions .fine{font-size:12px}.editorial-hero{padding-block:24px 48px}.breadcrumb{margin-bottom:40px;font-size:12px}.editorial-hero .eyebrow span{display:block;margin:8px 0 0}.editorial-hero h1{font-size:34px;line-height:1.45;margin-bottom:22px}.editorial-hero .lead{font-size:17px}.article-body .section{padding-block:44px}.article-body h2{font-size:27px;margin-bottom:24px}.article-body h3{font-size:19px}.article-body p{font-size:16px}.article-body .note{font-size:13px}.steps{gap:26px}.steps>li{padding-left:46px}.steps>li:before{width:32px;height:32px;font-size:12px}.steps h3{line-height:1.65}.note{padding:18px 20px}.faq summary{font-size:17px}.faq details p{font-size:15px;padding-right:12px}.feature-list li{padding-left:18px}.actions{gap:16px}.fine{font-size:12px}.narrow{width:calc(100% - 40px)}section[id]{scroll-margin-top:88px}}
@media(max-width:359px){.hero h1{font-size:31px}.mini-hero h1{font-size:37px}.hero .actions{gap:10px}.hero .text-link{font-size:13px}.wrap{width:calc(100% - 32px)}.feature-panel{padding-inline:20px}.editorial-hero h1{font-size:30px}.footer-top nav{gap:24px 12px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}