@font-face{font-family:Archivo;src:url('/assets/archivo.woff2') format('woff2');font-weight:100 900;font-display:swap}
@font-face{font-family:RehearsalCN;src:url('/assets/chinese.woff2') format('woff2');font-weight:100 900;font-display:swap}
:root{--blue:#2347df;--blue-dark:#1934a8;--ink:#182548;--muted:#51607b;--paper:#fff;--pale:#edf2ff;--lime:#e6fb8d;--line:#cbd4e9;--font:Archivo,RehearsalCN,'PingFang SC','Microsoft YaHei',sans-serif;--ease:cubic-bezier(.16,1,.3,1);--t-hero:clamp(46px,5.4vw,78px);--t-h2:clamp(32px,3.4vw,48px);--t-h3:clamp(24px,2.1vw,30px)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}::selection{background:var(--lime);color:var(--ink)}a{color:inherit;text-underline-offset:5px}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,a,summary{touch-action:manipulation}button{cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid currentColor;outline-offset:5px}input:focus,select:focus{outline:3px solid var(--blue);outline-offset:3px}input{caret-color:var(--blue)}.wrap{max-width:1320px;margin:auto;padding-left:48px;padding-right:48px}.stage{background:var(--blue);color:white}header{min-height:104px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:650;letter-spacing:-.04em;text-decoration:none;white-space:nowrap}nav{display:flex;align-items:center;gap:28px;font-size:14px}nav a{text-decoration:none}nav a:hover{text-decoration:underline}.nav-cta{display:flex;align-items:center;gap:10px}.language{border:1px solid #7e94f0;padding:6px 12px;border-radius:4px}.hero{display:grid;grid-template-columns:1.1fr 1fr;gap:70px;align-items:center;padding-top:68px;padding-bottom:98px}h1,h2,h3,p{margin-top:0}h2{font-size:var(--t-h2);line-height:1.12;letter-spacing:-.035em;font-weight:560;text-wrap:balance;margin-bottom:24px}h1{font-size:var(--t-hero);font-weight:620;line-height:1.06;letter-spacing:-.04em;margin-bottom:28px;text-wrap:balance}h1 span{color:#c4d4ff}.hero-copy>p{max-width:490px;font-size:16px;line-height:1.65;color:#e0e7ff;margin-bottom:32px}.button{display:inline-flex;align-items:center;justify-content:center;gap:24px;padding:16px 23px;min-height:56px;text-decoration:none;border:0;border-radius:4px;font-weight:600;font-size:16px;transition:background .2s,transform .2s}.button:hover{transform:translateY(-2px)}.primary{background:var(--lime);color:var(--ink)}.primary:hover{background:#f0ffb6}.hero-copy .availability{font-size:18px;max-width:460px;margin:0 0 28px;color:white;line-height:1.6}.speaker{font-size:14px;color:var(--muted);margin-bottom:19px}blockquote{font-size:var(--t-h3);line-height:1.3;letter-spacing:-.025em;font-weight:550;margin:0 0 24px}.annotation{font-size:16px;display:inline;background:var(--lime);box-decoration-break:clone;-webkit-box-decoration-break:clone;padding:3px 5px;line-height:1.9}@keyframes reveal{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.signup{display:grid;grid-template-columns:1fr 1fr;gap:120px;padding-top:100px;padding-bottom:70px}.signup-intro{max-width:390px;color:var(--muted)}label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}input[type=email],select{display:block;width:100%;border:1px solid #8290ad;background:white;color:var(--ink);border-radius:4px;padding:13px 14px;min-height:50px;margin-bottom:21px}input::placeholder{color:#63708a}.consent{display:flex;gap:10px;align-items:center;min-height:44px;padding:8px 0;font-size:14px;font-weight:400;color:var(--ink);margin:12px 0}.consent input{margin:0;accent-color:var(--blue);width:16px;height:16px;flex-shrink:0}.submit{width:100%;justify-content:space-between;padding-right:28px;background:var(--blue);color:white}.submit:hover{background:var(--blue-dark)}.submit:disabled{opacity:.65;cursor:wait;transform:none}#form-status{font-size:14px;line-height:1.5;margin:14px 0 0;min-height:21px}#form-status[data-state=error]{color:#a12a24}#form-status[data-state=success]{color:#225c38}.trap{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.privacy{font-size:14px;color:var(--muted)}summary{cursor:pointer;padding:13px 0;font-weight:550}details p{margin:0 0 20px;line-height:1.7}.faq{display:grid;grid-template-columns:1fr 1fr;gap:120px;padding-bottom:90px}.faq details{font-size:16px}.faq summary{padding:19px 0}.faq p{color:var(--ink)}footer{padding-top:28px;padding-bottom:32px;display:flex;align-items:center;justify-content:space-between;gap:24px;font-size:14px;color:var(--muted)}footer .brand{color:var(--ink);font-size:16px}.skip{position:absolute;left:16px;top:-100px;background:var(--lime);color:var(--ink);padding:12px;z-index:10}.skip:focus{top:16px}html:lang(zh-CN) h1{font-size:clamp(42px,4.7vw,66px);line-height:1.25;letter-spacing:-.025em}html:lang(zh-CN) h2{line-height:1.25}html:lang(zh-CN) blockquote{line-height:1.5}html:lang(zh-CN) .hero-copy>p{line-height:1.85}
@media(min-width:1500px){.hero{padding-top:84px;padding-bottom:110px}}@media(max-width:1050px){.wrap{padding-left:32px;padding-right:32px}.hero{gap:40px}.method,.signup,.faq{gap:60px}nav{gap:20px}.how-link{display:none}}@media(max-width:760px){.wrap{padding-left:22px;padding-right:22px}header{min-height:82px;gap:12px}.brand{font-size:16px;gap:5px}.brand svg{width:27px}.nav-cta{display:none}nav{gap:0}.language{font-size:14px}.hero{display:block;padding-top:38px;padding-bottom:53px}.hero-copy{max-width:560px}h1{max-width:560px}.hero-copy>p{font-size:16px;max-width:490px;margin-bottom:26px}.hero-copy .availability{max-width:460px}.hero-copy{margin-bottom:36px}.signup{display:block;padding-top:65px;padding-bottom:50px}.signup-intro{max-width:500px}.form-area{margin-top:32px}.faq{display:block;padding-bottom:55px}.faq h2{margin-bottom:22px}footer{flex-wrap:wrap;gap:16px}footer>span:nth-child(2){order:3;width:100%}html:lang(zh-CN) h1{font-size:clamp(38px,8.4vw,57px)}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}


.hero-copy h1{margin-bottom:36px}.panel-brief{margin:0;font-size:16px;line-height:1.5}.panel-brief dt{font-weight:650;margin-top:14px}.panel-brief dd{margin:4px 0 0;color:var(--ink)}

.phrase{display:inline-block;white-space:nowrap}html:lang(zh-CN) .hero-copy h1{text-wrap:initial}

select{appearance:none;-webkit-appearance:none;padding-right:52px;background-image:url("/assets/chevron-down.svg");background-repeat:no-repeat;background-position:right 18px center;background-size:20px 20px}.submit svg{flex-shrink:0}@media(forced-colors:active){select{appearance:auto;background-image:none}}

/* Carry the rehearsal palette through the full page. */
.signup-intro{color:var(--ink)}





.signup{max-width:none;background:var(--pale);padding:64px max(48px,calc((100vw - 1224px)/2));gap:72px}
.signup h2{max-width:440px}.form-area{max-width:560px;width:100%}
.cf-turnstile{margin:16px 0}
@media(max-width:343px){.signup.wrap{padding-left:10px;padding-right:10px}}
.privacy{margin-top:16px}.privacy summary{padding:16px;background:white;text-decoration:underline}
.privacy p{padding:16px;background:white;color:var(--ink)}
.faq{padding-top:64px;padding-bottom:64px;gap:72px}

footer.wrap{max-width:none;background:var(--blue);color:white;padding:40px max(48px,calc((100vw - 1224px)/2));flex-wrap:wrap}
footer .brand{width:100%;font-size:clamp(32px,6vw,78px);color:white;white-space:normal;line-height:1.1}
footer .brand svg{display:none}
button:active,.button:active{transform:translateY(1px)}summary:hover{text-decoration:underline}
.entered{animation:reveal .65s var(--ease) both}
@media(max-width:1050px){.hero{grid-template-columns:1fr 1fr;gap:32px}.signup{padding-left:32px;padding-right:32px}}
@media(max-width:760px){.hero{display:block}.signup{padding:44px 22px}.faq{padding-top:44px;padding-bottom:44px}.faq h2{margin-bottom:30px}footer.wrap{padding:32px 22px}html:lang(zh-CN) h1{font-size:clamp(38px,8.4vw,57px)}}

.faq details p{margin:0;padding-bottom:20px}

/* Evidence below the hero: annotated answers, then one rehearsal trail. */
.pain-section{background:var(--ink);color:white;padding:120px 0}
.pain-head{margin-bottom:72px}
.pain-head h2{color:#c4d4ff;margin:0;max-width:760px}
.hero-image{margin:0}.hero-image img{display:block;width:100%;height:auto;border-radius:8px}
.fragments{display:grid;gap:48px}
.fragment{display:grid;grid-template-columns:4fr 8fr;gap:64px;align-items:start}
.fragment h3,.trail h3{font-size:var(--t-h3);font-weight:600;line-height:1.2;letter-spacing:-.025em;margin:0 0 12px;text-wrap:balance}
.fragment h3{padding-top:28px;max-width:340px}
.fragment-sheet,.trail-sheet{background:var(--pale);color:var(--ink);border-radius:8px;padding:28px 32px 20px}
.fragment-sheet blockquote,.trail-sheet blockquote{margin-bottom:18px}
.fragment-note{margin:0;font-size:16px}
.method{padding-top:120px;padding-bottom:120px}
.method>h2{margin-bottom:72px}
.trail{list-style:none;padding:0;margin:0;display:grid;gap:72px}
.trail li{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:center}
.trail li:nth-child(even) .trail-copy{order:2}
.trail-copy p{font-size:18px;margin:0;max-width:440px}
.examples-note{font-size:14px;color:var(--muted);margin:56px 0 0}
@media(min-width:1051px){.hero{grid-template-columns:5fr 7fr}}
.trail-pattern{font-size:var(--t-h3);font-weight:600;line-height:1.2;letter-spacing:-.025em;margin:0 0 18px}
.faq{padding-top:120px;padding-bottom:120px}
.faq>div{background:var(--pale);border-radius:8px;padding:12px 32px 16px}
.faq details{font-size:16px}.faq summary{padding:18px 0}
.faq details[open]>summary{color:var(--blue)}
html:lang(zh-CN) .fragment h3,html:lang(zh-CN) .trail h3,html:lang(zh-CN) .trail-pattern{line-height:1.4;text-wrap:initial}
html:lang(zh-CN) .trail-copy p{line-height:1.9}
@media(max-width:760px){
.pain-section,.method,.faq{padding-top:64px;padding-bottom:64px}
.pain-head{margin-bottom:40px}
.hero-image img{border-radius:6px}
.fragments,.trail{gap:44px}
.fragment,.trail li{display:block}.fragment h3{padding-top:0}
.fragment-sheet,.trail-sheet{padding:22px 20px 16px}
.method>h2{margin-bottom:40px}.trail-copy{margin-bottom:20px}
.faq>div{padding:6px 20px 10px}
.faq{padding-bottom:80px}
}
.sheet{background:var(--paper);border-radius:8px;overflow:hidden}.sheet form{padding:0 32px 8px}.sheet .privacy{padding:0 32px 12px;border-top:1px solid var(--line)}.sheet-band{margin:0 -32px 28px;padding:14px 32px;background:var(--blue);color:white;font-size:14px;font-weight:600;letter-spacing:-.01em}.signup-note{max-width:390px;color:var(--muted);font-size:16px;margin-bottom:12px}.sheet input[type=email]{border:0;border-bottom:2px solid var(--ink);border-radius:0;padding:10px 0;font-size:20px;min-height:52px;margin-bottom:28px}.sheet input[type=email]:focus{outline:0;border-bottom-color:var(--blue);box-shadow:0 2px 0 var(--blue)}.chips{border:0;margin:0 0 24px;padding:0;min-width:0}.chips legend{font-size:14px;font-weight:600;margin-bottom:10px;padding:0}.optional{font-weight:400;color:var(--muted);margin-left:8px}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.chip{position:relative;margin:0;font-weight:400;font-size:15px}.chip input{position:absolute;opacity:0;inset:0;width:100%;height:100%;margin:0;appearance:none;-webkit-appearance:none;border:0;background:none;cursor:pointer}.chip span{display:inline-flex;align-items:center;min-height:44px;padding:8px 14px;border:1px solid #8290ad;border-radius:4px;cursor:pointer;transition:background .15s,border-color .15s}.chip:hover span{border-color:var(--ink)}.chip input:checked+span{background:var(--lime);border-color:var(--ink);font-weight:600}.chip input:focus-visible+span{outline:3px solid var(--blue);outline-offset:3px}.sheet .consent{margin:4px 0}.sheet .cf-turnstile{margin:16px 0}.sheet .submit{margin-top:4px}
@media(max-width:760px){.sheet form{padding:0 20px 8px}.sheet-band{margin:0 -20px 24px;padding:12px 20px}.sheet .privacy{padding:0 20px 8px}}
@media(prefers-reduced-motion:reduce){.chip span{transition:none}}
@media(forced-colors:active){.chip input:checked+span{border:3px solid Highlight}}

/* Keep Chinese typography regular; size, color and spacing provide hierarchy. */
html:lang(zh-CN) :is(h1,h2,h3,blockquote,p,dt,dd,label,legend,summary,button,figcaption,.button,.chip input:checked+span){font-weight:400}