:root{--ink:#30283d;--muted:#6e6578;--paper:#fdfbf7;--purple:#eee5f5;--purple-deep:#dccae9;--yellow:#faedc7;--line:#e1dae5}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.85}a{color:inherit;text-decoration:none}button{font:inherit}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #795395;outline-offset:5px}.wrap{max-width:1180px;width:calc(100% - 96px);margin:auto}header{min-height:104px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:8px;white-space:nowrap;font-size:22px;font-weight:650}.brand>span{font-size:13px;font-weight:400}.flower{font-size:36px;color:#9e81b0;line-height:1}nav{display:flex;gap:26px;font-size:14px}.nav-cta{font-size:14px;border:1px solid var(--ink);border-radius:30px;padding:8px 18px}.hero{display:grid;grid-template-columns:1.25fr 1fr;gap:80px;align-items:center;padding-top:88px;padding-bottom:88px}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:600;color:var(--muted);margin:0 0 24px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(40px,4.5vw,65px);font-weight:600;letter-spacing:-2px;line-height:1.28;margin-bottom:28px}h2{font-size:clamp(30px,3vw,44px);font-weight:550;letter-spacing:-1px;line-height:1.42;margin-bottom:25px}h3{font-size:24px;font-weight:550;line-height:1.5}em{font-style:normal;color:#85649b}.marker{background:linear-gradient(transparent 66%,var(--yellow) 66%)}p{margin-bottom:20px}.intro{font-size:17px}.soft{font-size:14px;color:var(--muted)}.actions{display:flex;align-items:center;gap:25px;flex-wrap:wrap;margin-top:30px}.btn{display:inline-block;padding:13px 23px;border-radius:8px;font-size:14px;font-weight:600;transition:transform .2s}.btn:hover{transform:translateY(-2px)}.yellow{background:var(--yellow)}.dark{background:var(--ink);color:white}.text-link{font-size:14px;text-decoration:underline;text-underline-offset:6px;border:0;background:none;padding:0;color:var(--ink);cursor:pointer}.hero-note{position:relative;background:var(--purple);border-radius:140px 140px 18px 18px;padding:80px 40px 34px;transform:rotate(2deg);min-height:478px}.note-tag{font-size:11px;letter-spacing:2px}.hero-note h2{font-family:"Songti SC","STSong",serif;font-size:38px;margin-top:28px}.big-flower{position:absolute;right:27px;top:8px;font-size:100px;color:#b99ece;line-height:1}.note-lines p{border-bottom:1px solid #d8cbe1;padding:10px 0;margin:0;font-size:14px}.note-lines span{font-size:11px;margin-right:14px;color:#85649b}.hand{font-family:"Songti SC",serif;font-size:18px;margin:26px 0 0}.credentials{display:flex;justify-content:space-between;padding:25px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:13px;letter-spacing:1px;color:var(--muted)}.section{padding-top:100px;padding-bottom:100px}.about{display:grid;grid-template-columns:.8fr 1.2fr;gap:100px}.about h2 em{background:linear-gradient(transparent 65%,var(--purple) 65%)}.about-copy>p{color:var(--muted)}.lead{font-size:20px;color:var(--ink)!important;line-height:1.65}.timeline{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);padding-top:22px;margin:32px 0}.timeline b,.timeline span{display:block;font-size:13px}.timeline span{font-size:12px;color:var(--muted);margin-top:6px}details{border-top:1px solid var(--line);padding-top:16px}summary{cursor:pointer;list-style:none;font-size:14px}summary span{float:right}details p{font-size:14px;margin-top:20px}small{font-size:12px;color:var(--muted)}.work-bg{background:#f3eef6}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:35px;margin-bottom:45px}.section-heading>p{font-size:14px;color:var(--muted)}.section-heading h2{margin:0}.work-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.work-grid article{border-top:1px solid #cabbd4;padding-top:24px}.num{font-family:Georgia,serif;font-size:32px;color:#9c80af}.work-grid h3{margin:20px 0}.work-grid p{font-size:15px;color:var(--muted)}.work-bottom{border-top:1px solid #dcd1e3;padding-top:20px;margin-top:25px}.work-bottom b{font-size:12px;font-weight:550}.work-bottom p{font-size:14px;margin:10px 0 0}.steps{padding:0;list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:38px;margin:60px 0 0}.steps li{border-top:3px solid var(--yellow);padding-top:22px}.steps li:nth-child(2){border-color:var(--purple-deep)}.steps li:nth-child(3){border-color:#bfa8cf}.steps span{font-size:12px;color:var(--muted)}.steps h3{font-size:22px;margin:15px 0}.steps p{font-size:15px;color:var(--muted);margin:0}.case-section{background:var(--yellow)}.case-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:80px;align-items:center}.case-grid>div>p:last-child{font-size:14px;color:var(--muted)}.case-card{background:#fffcf3;border-radius:16px;padding:38px}.pill{border:1px solid #daceb3;border-radius:30px;padding:6px 12px;font-size:11px}.case-card h3{font-size:30px;margin:25px 0}.case-card strong{font-weight:550;color:#85649b}.case-card p{font-size:14px}.case-line{height:1px;background:#e7deca;margin:25px 0}.case-note{font-size:12px!important;color:var(--muted);margin:20px 0 0}.articles{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.article-art{height:215px;padding:26px;position:relative;overflow:hidden}.article-art span{font-size:11px;letter-spacing:3px;display:block}.article-art b{display:block;font-family:"Songti SC",serif;font-size:27px;font-weight:500;line-height:1.5;margin-top:25px;position:relative;z-index:1}.article-art i{position:absolute;right:8px;bottom:-25px;font-size:130px;font-style:normal;line-height:1;color:#fff9}.art-one{background:var(--purple)}.art-two{background:var(--yellow)}.art-three{background:#e6dfed}.article-category{font-size:11px!important;letter-spacing:2px;margin:22px 0 10px;color:#85649b!important}.articles h3{font-size:21px;margin-bottom:15px}.articles p{font-size:14px;color:var(--muted)}.community{background:var(--purple);padding:60px;border-radius:20px;display:grid;grid-template-columns:1.5fr 1fr;gap:70px}.community h2{font-size:40px}.community>div>p:not(.eyebrow):not(.lead){font-size:15px;color:var(--muted)}.question-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.question-chips span{padding:5px 12px;border:1px solid #d4c5e0;border-radius:25px;font-size:12px}.price-panel{background:#fbf7ee;border-radius:12px;padding:32px;align-self:center}.price-panel>span{font-size:12px;color:var(--muted)}.price{font-size:84px;font-family:Georgia,serif;line-height:1.3;margin:14px 0}.price small{font-size:30px;color:var(--ink);margin-right:5px}.price-panel p{font-size:14px;color:var(--muted)}.price-panel .btn{width:100%;text-align:center}.contact-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:90px}.contact-grid>div>p:not(.eyebrow):not(.lead){font-size:15px;color:var(--muted)}.qr-box{background:var(--yellow);border-radius:20px;text-align:center;padding:30px}.qr-paper{background:white;padding:15px;max-width:300px;margin:0 auto 20px;border-radius:8px}.qr-paper img{width:100%;height:auto;display:block}.qr-box strong{font-size:18px}.qr-box p{font-size:12px;margin:8px 0}footer{border-top:1px solid var(--line);padding:30px 0 40px;display:flex;align-items:center;justify-content:space-between;gap:20px}footer p,footer>a:last-child{font-size:12px;color:var(--muted);margin:0}dialog{width:min(600px,90vw);border:0;border-radius:18px;padding:48px;background:var(--paper);color:var(--ink);box-shadow:0 15px 90px #30283d33}dialog::backdrop{background:#30283d70}dialog h2{font-size:26px}dialog p{font-size:16px}.close{position:absolute;right:16px;top:10px;font-size:30px;background:none;border:0;cursor:pointer}.skip{position:absolute;left:20px;top:-80px}.skip:focus{top:0;background:white;z-index:10}@media(max-width:1050px){nav{gap:15px}.wrap{width:calc(100% - 64px)}.hero{gap:40px}.hero-note{padding:70px 28px 30px}.about{gap:55px}.community{gap:35px;padding:40px}.case-grid{gap:35px}.contact-grid{gap:45px}}@media(max-width:760px){.wrap{width:calc(100% - 40px)}header{min-height:80px;flex-wrap:wrap;gap:10px;padding-top:16px;padding-bottom:14px}.brand{font-size:19px}.brand>span{font-size:11px}.flower{font-size:28px}nav{order:3;width:100%;overflow:auto;white-space:nowrap;justify-content:space-between;font-size:11px;gap:12px;padding-top:10px}.nav-cta{font-size:11px;padding:5px 10px}.hero{grid-template-columns:1fr;padding-top:45px;padding-bottom:40px;gap:40px}h1{font-size:43px;letter-spacing:-1.5px}.intro{font-size:16px}.soft{font-size:14px}.desktop{display:none}.eyebrow{font-size:10px;letter-spacing:1.2px;margin-bottom:20px}.hero-note{transform:none;min-height:0;border-radius:80px 80px 12px 12px;padding:48px 30px 30px}.hero-note h2{font-size:30px;margin-top:20px}.big-flower{font-size:80px;right:25px;top:0}.note-tag{font-size:10px}.actions{gap:20px}.credentials{font-size:10px;letter-spacing:0;gap:12px;padding:20px 0;flex-wrap:wrap}.section{padding-top:60px;padding-bottom:60px}.about,.case-grid,.contact-grid{grid-template-columns:1fr;gap:30px}.about h2 br:nth-of-type(2),.about h2 br:nth-of-type(3){display:none}h2{font-size:31px}.lead{font-size:18px}.about-copy{font-size:15px}.section-heading{display:block;margin-bottom:32px}.section-heading>p{margin:18px 0 0}.work-grid,.steps,.articles{grid-template-columns:1fr;gap:35px}.work-grid h3 br{display:none}.work-grid h3{font-size:23px;margin:15px 0}.num{font-size:26px}.work-bottom{margin-top:18px;padding-top:15px}.steps{margin-top:30px;gap:28px}.steps li{padding-top:15px}.case-card{padding:26px}.case-card h3{font-size:27px}.article-art{height:210px}.articles article{padding-bottom:25px;border-bottom:1px solid var(--line)}.articles h3 br{display:none}.community{grid-template-columns:1fr;padding:30px 24px;gap:25px}.community h2{font-size:32px}.price-panel{padding:25px}.price{font-size:70px}.question-chips span{font-size:11px}.qr-box{padding:25px}.qr-paper{max-width:280px}.contact-grid{gap:30px}footer{flex-wrap:wrap;gap:16px}footer .brand{width:100%}dialog{padding:35px 25px}dialog h2{font-size:23px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}

/* V3: editorial accordion and concrete service steps */
.about{grid-template-columns:1fr 1.2fr;gap:65px}.about h2{font-size:36px}.about-caption{font-size:14px;color:var(--muted)}.takeaway{border-left:2px solid #b69ac8;padding-left:12px;color:#715385!important;font-size:13px!important;margin-top:18px!important}.method-intro{max-width:640px;color:var(--muted);font-size:15px}.method-footnote{padding:20px 25px;background:#f3eef6;border-radius:10px;margin-top:38px;font-size:14px;color:var(--muted)}.article-fold{border-top:1px solid var(--line);padding:0}.article-fold:last-child{border-bottom:1px solid var(--line)}.article-fold summary{display:grid;grid-template-columns:65px 1fr 130px;gap:25px;align-items:center;padding:32px 0;list-style:none;scroll-margin-top:20px}.article-fold summary::-webkit-details-marker{display:none}.article-fold summary span{float:none}.article-number{font-size:38px;font-family:Georgia,serif;color:#a68db6}.article-overview{display:block}.article-category{display:block;margin:0 0 8px}.article-overview h3{font-size:24px;margin:0 0 10px}.article-description{display:block;font-size:14px;color:var(--muted)}.read-meta{display:block;font-size:11px;color:var(--muted);margin-top:10px}.fold-action{border-radius:30px;background:var(--yellow);padding:10px 16px;text-align:center;font-size:13px;white-space:nowrap}.when-open{display:none}.article-fold[open] .when-open{display:inline}.article-fold[open] .when-closed{display:none}.article-fold[open] .fold-action{background:var(--purple)}.article-fold[open]{background:#f7f3f9;padding:0 24px;border-radius:12px;margin:15px 0}.article-body{max-width:740px;margin:0 auto;padding:20px 20px 40px;line-height:2}.article-body p{font-size:17px;margin:0 0 23px;color:var(--ink)}.article-body h4{font-size:23px;line-height:1.65;margin:38px 0 18px;font-weight:600}.article-body li{font-size:16px;margin:10px 0}.article-body a{text-decoration:underline;text-underline-offset:4px;color:#715385;overflow-wrap:anywhere}.article-end{border-top:1px solid var(--line);padding-top:25px;margin-top:30px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;font-size:14px}.collapse-bottom{background:var(--purple);color:var(--ink);border:1px solid #d4c5e0;border-radius:30px;cursor:pointer;padding:10px 20px;font-size:14px}.hero-note h2{font-size:33px}@media(max-width:760px){.about{grid-template-columns:1fr;gap:25px}.about h2{font-size:30px}.hero h1{font-size:39px}.article-fold summary{grid-template-columns:35px 1fr;gap:14px;padding:25px 0}.article-number{font-size:28px;align-self:start}.article-overview h3{font-size:21px}.fold-action{grid-column:2;justify-self:start}.article-fold[open]{padding:0 14px}.article-body{padding:0 0 28px}.article-body p{font-size:16px;overflow-wrap:anywhere}.article-body h4{font-size:21px}.article-body ol{padding-left:24px}.article-description{font-size:13px}.hero-note h2{font-size:29px}}

/* V3.1 expandable starting notes */
.hero{align-items:start}.hero-note{transform:none}.note-lines .note-hint{font-size:11px;border:0;color:#715385;padding:0;margin:0 0 10px}.start-note{border-top:0;border-bottom:1px solid #d8cbe1;padding:0}.start-note summary{display:flex;align-items:center;gap:12px;list-style:none;padding:16px 0;cursor:pointer}.start-note summary::-webkit-details-marker{display:none}.start-note summary span{float:none;margin:0}.start-note .note-index{font-size:11px;color:#85649b}.start-note .note-title{font-size:14px;color:var(--ink);flex:1}.start-note .note-toggle{font-size:11px;color:#715385;white-space:nowrap}.start-note[open] .when-open{display:inline}.start-note[open] .when-closed{display:none}.note-lines .note-body p{font-size:14px;border:0;padding:0;margin:0 0 16px;line-height:1.9}.note-body{padding:6px 0 20px}.note-lines .note-exercise{background:#f9f3df;border-radius:8px;padding:14px!important}.note-exercise b{display:block;font-size:12px;margin-bottom:8px}.note-collapse{border:0;background:none;padding:4px 0;color:#715385;cursor:pointer;text-decoration:underline;text-underline-offset:4px;font-size:12px}

/* 0.5 methodology and offers */
.gps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.gps-card{background:#f4eef8;padding:28px;border-radius:14px}.gps-card:nth-child(2){background:#fbf0d6}.gps-card:nth-child(3){background:#eee8f3}.gps-letter{font:62px Georgia,serif;color:#9473a9;display:block;line-height:1.1;margin-bottom:20px}.gps-card .eyebrow{font-size:10px;letter-spacing:1px;margin-bottom:18px}.gps-card h3{font-size:23px}.gps-card p{font-size:15px;color:var(--muted)}.gps-card details{margin-top:24px}.gps-card summary{font-size:13px}.gps-body h4{font-size:16px;font-weight:600;margin:24px 0 12px;line-height:1.7}.gps-body p{font-size:14px;margin-top:15px}.deliverable{border-left:2px solid #a98bbd;padding-left:14px;margin-top:22px}.deliverable b{font-size:12px}.deliverable p{font-size:13px}.scope-note{font-size:12px!important;color:var(--muted);line-height:1.8}.gps-example{margin-top:35px;border:1px solid var(--line);padding:30px;border-radius:12px}.gps-example h3{font-size:22px}.gps-example p{font-size:15px}.role-bg{background:#f5f0f8}.role-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:35px}.role-grid h3{font-size:22px}.role-grid p{font-size:15px;color:var(--muted)}.fit-note{margin-top:30px;padding:25px 30px;background:var(--paper);border-radius:12px;font-size:14px}.fit-note p{margin:14px 0 0;color:var(--muted)}.offer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}.offer-card{padding:30px 24px;border:1px solid var(--line);border-radius:15px;background:#fffdf8}.offer-card.featured{background:var(--purple);border-color:#d8c8e3}.offer-card h3{font-size:24px;margin:25px 0 15px}.offer-price{font:38px Georgia,serif;margin-bottom:24px;line-height:1.3}.offer-price small{font:13px -apple-system,'PingFang SC',sans-serif}.offer-price.custom-price{font:24px -apple-system,'PingFang SC',sans-serif;line-height:1.6}.offer-card p,.offer-card li{font-size:14px;color:var(--muted)}.offer-card ul,.offer-card ol{padding-left:20px}.offer-card li{margin-bottom:14px}.offer-card .btn{display:block;text-align:center;margin:25px 0 12px}.offer-card>small{font-size:11px;display:block;line-height:1.8}.offer-scope{margin-top:26px}.faq-section{padding:20px 0 0}.faq-section details{padding:22px 0;border-top:1px solid var(--line)}.faq-section summary{font-size:16px;font-weight:500}.faq-section details p{max-width:800px;color:var(--muted);font-size:15px;margin:20px 0 0}@media(max-width:1000px){nav{gap:12px;font-size:12px}.gps-grid,.offer-grid{gap:15px}.gps-card,.offer-card{padding:24px 18px}.offer-price{font-size:32px}}@media(max-width:760px){.gps-grid,.offer-grid,.role-grid{grid-template-columns:1fr;gap:22px}.gps-card,.offer-card{padding:28px 24px}.gps-letter{font-size:48px}.gps-card h3{font-size:25px}.gps-example{padding:24px}.gps-example h3{font-size:20px}.offer-price{font-size:38px}.faq-section summary{font-size:15px}.faq-section summary span{float:none}.fit-note{padding:24px}nav{font-size:11px;gap:12px}.role-grid h3{font-size:21px}}

.gps-grid{align-items:start}.gps-card summary span{float:none}.gps-card details[open] .when-open{display:inline}.gps-card details[open] .when-closed{display:none}

/* 0.6: explicit disclosure controls, horizontal method rows, deliverables and 3 products */
.gps-grid{display:flex;flex-direction:column;gap:20px}.gps-card{display:grid;grid-template-columns:70px 1fr 1.2fr;gap:12px 28px;width:100%;padding:32px}.gps-letter{grid-column:1;grid-row:1/4;margin:0}.gps-card>.eyebrow{grid-column:2;margin:0}.gps-card>h3{grid-column:2;margin:0;font-size:25px}.gps-card>p:not(.eyebrow){grid-column:3;grid-row:1/3;margin:0;align-self:center}.gps-card>details{grid-column:2/4;width:100%;margin:10px 0 0;border:0;padding:0}.gps-body{max-width:760px}.gps-card summary{display:inline-block;background:var(--ink);color:#fff;padding:11px 20px;border-radius:8px;font-size:14px;font-weight:600;min-height:44px}.gps-card summary:hover{background:#584265}.gps-card summary span{color:inherit}.faq-section summary{display:flex;align-items:center;justify-content:space-between;gap:20px}.answer-toggle{display:inline-block;background:var(--purple);border:1px solid #cfbcdd;border-radius:7px;padding:8px 14px;white-space:nowrap;font-size:13px;min-height:42px}.answer-toggle span{float:none!important}.faq-section details[open] .when-open{display:inline}.faq-section details[open] .when-closed{display:none}.start-note .note-toggle{background:#faf6ff;border:1px solid #cbb8d8;padding:7px 9px;border-radius:7px;min-height:38px;display:inline-flex;align-items:center}.fold-action{border:1px solid #d9c38d;font-weight:600}.audience-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:35px}.audience-grid article{padding:32px;background:var(--purple);border-radius:14px}.audience-grid article:last-child{background:#f4f1eb}.audience-label{font-size:13px;font-weight:600;letter-spacing:2px}.audience-grid h3{font-size:23px;margin:20px 0}.audience-grid ul{padding-left:20px}.audience-grid li{margin:15px 0;font-size:15px;color:var(--muted)}.delivery-bg{background:#f8f3e8}.delivery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.delivery-grid article{background:var(--paper);border:1px solid #e9e0cf;border-radius:12px;padding:26px;position:relative}.delivery-cat{font-size:11px;color:#85649b}.delivery-number{float:right;font:20px Georgia;color:#b7a5c5}.delivery-grid h3{font-size:21px;margin:20px 0 14px}.delivery-grid p{font-size:14px;color:var(--muted)}.delivery-result{border-top:1px solid var(--line);padding-top:14px;font-size:12px;color:#715385}.delivery-grid+.scope-note{margin:24px 0 0}.primary-community{width:100%;margin-top:35px;padding:48px;gap:55px}.primary-community h2{margin-top:24px}.primary-community .community-boundary{font-size:13px!important;border-top:1px solid #d4c5e0;padding-top:20px;margin:24px 0 0}.secondary-offers{grid-template-columns:1fr 1fr;margin-top:30px;gap:30px}.secondary-offers .offer-card{padding:35px}.secondary-offers .offer-card p,.secondary-offers li{font-size:15px}.offer-subtitle{font-size:14px!important;color:#715385!important;margin-top:-7px}.price-status{font-size:12px!important;color:#715385!important}.offer-card .btn{margin-top:25px}.price-panel .btn{padding:14px 12px}header nav{gap:18px;font-size:12px}@media(max-width:1050px){header nav{gap:12px;font-size:11px}.delivery-grid{gap:16px}.delivery-grid article{padding:22px}.gps-card{grid-template-columns:55px 1fr 1fr;gap:15px 22px}}@media(max-width:760px){.gps-card{grid-template-columns:45px 1fr;padding:26px 22px;gap:12px 16px}.gps-letter{font-size:48px;grid-row:1/3}.gps-card>.eyebrow{grid-column:2}.gps-card>h3{grid-column:2;font-size:23px}.gps-card>h3 br{display:none}.gps-card>p:not(.eyebrow){grid-column:1/3;grid-row:auto;margin-top:10px}.gps-card>details{grid-column:1/3}.gps-card summary{display:block;text-align:center;width:100%}.audience-grid,.delivery-grid,.secondary-offers{grid-template-columns:1fr;gap:20px}.audience-grid article,.secondary-offers .offer-card{padding:26px}.primary-community{padding:28px 24px;gap:25px}.primary-community h2{font-size:30px}.faq-section summary{display:block}.answer-toggle{display:table;margin-top:12px}.delivery-grid article{padding:25px}.start-note .note-title{font-size:13px}.start-note summary{gap:8px}header nav{font-size:11px;gap:16px;justify-content:flex-start}.secondary-offers .offer-price{font-size:36px}.secondary-offers .custom-price{font-size:25px}}

/* Contact panel: readable QR, explicit identifier, responsive persistent entry. */
.wechat-id{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:14px 0;font-size:14px;line-height:1.6;overflow-wrap:anywhere}.wechat-id strong{user-select:all}.copy-wechat{border:1px solid #b99ece;background:var(--yellow);color:var(--ink);border-radius:7px;padding:7px 12px;cursor:pointer}.copy-status{display:block;width:100%;font-size:12px;color:#695178}.copy-status:empty{display:none}
.wechat-float{position:fixed;right:16px;bottom:20px;z-index:50;width:218px;border:1px solid #d8cbe1;border-radius:15px;background:var(--purple);box-shadow:0 6px 28px #30283d20}.wechat-float details{border:0;margin:0;padding:0}.wechat-float summary{display:block;cursor:pointer;padding:13px 12px;font-size:13px;font-weight:600;list-style:none;border:0}.wechat-float summary::-webkit-details-marker{display:none}.wechat-float .when-open{display:none}.wechat-float details[open] .when-closed{display:none}.wechat-float details[open] .when-open{display:inline}.wechat-float-body{padding:0 12px 16px;text-align:center;max-height:calc(100dvh - 100px);overflow:auto}.wechat-float-body img{display:block;width:100%;height:auto;background:white;border-radius:6px}.wechat-float-body p{font-size:12px;margin:8px 0}.wechat-float-body .text-link{font-size:12px}
@media(min-width:900px){body{padding-right:242px}.wechat-float{top:50%;bottom:auto;transform:translateY(-50%)}header{flex-wrap:wrap;padding-top:18px;padding-bottom:18px}nav{gap:16px}.hero{gap:35px}.wrap{width:calc(100% - 64px)}}
@media(max-width:899px){body{padding-bottom:80px}.wechat-float{right:12px;bottom:max(12px,env(safe-area-inset-bottom));width:260px;max-width:calc(100vw - 24px)}.wechat-float-body img{width:210px;max-width:100%;margin:auto}}

@media(min-width:900px) and (max-width:1200px){.hero,.about{grid-template-columns:1fr}.hero-note{max-width:620px}.section-heading{gap:20px}nav{flex-wrap:wrap}}
.wechat-float summary span{float:none}.wechat-float-body{clear:both;width:100%}.wechat-float .wechat-id>span{width:100%}.wechat-float .copy-wechat{white-space:nowrap}

/* 0.8 portrait and editorial case */
.about-portrait{margin:32px 0 0;max-width:340px;border:10px solid var(--purple);border-radius:22px;background:var(--purple);overflow:hidden}.about-portrait img{display:block;width:100%;height:auto;border-radius:13px}.about-portrait figcaption{padding:12px 8px 5px;line-height:1.7}.about-portrait figcaption strong,.about-portrait figcaption span{display:block}.about-portrait figcaption span{font-size:12px;color:var(--muted)}
.case-intro{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:44px;align-items:center}.case-intro h2{margin-top:24px}.case-intro>div>p{max-width:720px}.case-milestone{padding:28px 22px;background:var(--yellow);border-radius:20px;text-align:center}.case-milestone span,.case-milestone strong,.case-milestone b,.case-milestone small{display:block}.case-milestone span,.case-milestone small{font-size:12px}.case-milestone strong{font-size:54px;color:#85649b;line-height:1.4;margin:12px 0}.case-milestone p{font-size:14px;margin:20px 0}.case-story{border:0;padding:18px 0 0}.case-story>summary{display:inline-block;background:var(--ink);color:white;padding:13px 20px;border-radius:10px;font-weight:600}.case-story summary span{float:none}.case-story .when-open{display:none}.case-story[open] .when-closed{display:none}.case-story[open] .when-open{display:inline}.case-story-body{max-width:780px;margin:32px auto 0}.case-story-body p{font-size:16px;line-height:1.95}.case-story-body h3{margin:38px 0 18px;font-size:24px}.case-exercise{background:var(--purple);padding:24px;border-radius:16px;margin:30px 0}.case-exercise h4{margin:0;font-size:18px}.case-exercise p:last-child{margin-bottom:0}.case-ending{font-size:20px!important;font-weight:600}.case-editorial>.case-note{margin:24px 0 0;max-width:780px;font-size:12px;color:var(--muted)}
@media(max-width:700px){.about-portrait{max-width:300px;margin:26px auto 0}.case-intro{grid-template-columns:1fr;gap:16px}.case-milestone{padding:20px}.case-milestone strong{font-size:46px}.case-milestone p{margin:12px 0}.case-story>summary{display:block;font-size:14px;text-align:center}.case-story-body h3{font-size:21px}.case-story-body p{font-size:15px}.case-exercise{padding:20px}}
@media(min-width:900px) and (max-width:1200px){.about{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:32px}.about h2{font-size:30px}.about-portrait{max-width:280px}.about-copy{font-size:15px}.about .timeline{grid-template-columns:1fr;gap:10px}}

/* 0.9: reusable case cards; full-width story region outside card grid */
.case-card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:24px}.case-preview{background:var(--paper);border:1px solid #e6dcc6;border-radius:24px;overflow:hidden;display:flex;flex-direction:column}.case-preview-copy{padding:30px;flex:1}.case-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.case-tags span{background:var(--purple);color:#6f4f86;font-size:12px;padding:4px 11px;border-radius:20px}.case-preview h3{font-size:25px;margin-bottom:20px}.case-preview p{font-size:15px;color:var(--muted)}.case-preview-copy>small{display:block;font-size:12px;color:var(--muted);margin-top:15px}.case-open,.case-close{background:var(--ink);border:0;color:white;padding:13px 20px;border-radius:9px;cursor:pointer;font:inherit;font-size:14px;font-weight:600}.case-preview-result{background:var(--purple);padding:28px;text-align:center}.case-preview-result>span,.case-preview-result>strong,.case-preview-result>b,.case-preview-result>small{display:block}.case-preview-result>span,.case-preview-result>small{font-size:12px}.case-preview-result>strong{font-size:54px;line-height:1.3;color:#85649b;margin:10px 0}.case-preview-result p{margin:14px 0}.case-preview:only-child{display:grid;grid-template-columns:minmax(0,1fr) 240px}.case-full-panel{margin-top:24px;padding:12px 36px 32px;background:var(--paper);border:1px solid #e6dcc6;border-radius:24px;scroll-margin-top:24px}.case-full-panel[hidden]{display:none!important}.case-full-panel .case-story-body{margin-top:0}.case-library>.case-note{font-size:12px;color:var(--muted);margin:22px 0 0}
@media(max-width:700px){.case-preview:only-child{display:flex}.case-preview-copy{padding:24px}.case-preview h3{font-size:23px}.case-preview-result{padding:20px}.case-preview-result>strong{font-size:44px}.case-full-panel{padding:8px 22px 24px}.case-open{width:100%}}