:root{--ink:#112b42;--muted:#506373;--blue:#245ce8;--mint:#a6ebd6;--paper:#fcfcf8;--line:#d8e1e5;--wash:#eaf0f4;--white:#fff;--shadow:0 18px 50px #153a5420}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Aptos","Trebuchet MS","Microsoft YaHei",sans-serif;font-size:17px;line-height:1.65}a{color:inherit;text-underline-offset:5px}button{font:inherit}a,button{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px}img{display:block;max-width:100%;height:auto}p{margin:0 0 1em}h1,h2,h3{line-height:1.14;margin:0 0 .55em;letter-spacing:-.035em}h1,h2{font-family:Georgia,"Noto Serif CJK SC","Microsoft 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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

/* Search-led landing pages: free entry first, focused tasks and actual output. */
.free-summary{font-size:14px;font-weight:600;color:#185b49;margin:22px 0 10px}.task-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:25px}.task-grid article{border-top:2px solid var(--line);padding-top:18px}.task-grid h3{line-height:1.3;font-size:21px}.task-grid p{font-size:15px;color:var(--muted)}.task-grid .text-link{font-size:14px}.task-number{font-size:12px;letter-spacing:.08em;color:var(--blue);display:block;margin-bottom:12px}.ai-workflow{display:grid;grid-template-columns:1.25fr 1fr;gap:60px;align-items:center}.ai-workflow p{color:var(--muted)}.compact-steps{padding:0;list-style:none;counter-reset:workflow}.compact-steps li{counter-increment:workflow;border-bottom:1px solid var(--line);padding:22px 0;font-size:18px;font-weight:600;display:flex;gap:18px}.compact-steps li:before{content:counter(workflow,decimal-leading-zero);color:var(--blue)}.home-pdf-example{display:grid;grid-template-columns:1.2fr .8fr;gap:70px;align-items:center}.home-pdf-example>div>p{color:var(--muted)}.home-pdf-example>a{background:var(--wash);padding:25px;border-radius:12px}.home-pdf-example img{max-height:430px;width:auto;margin:auto;box-shadow:var(--shadow)}.free-pro-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.free-pro-grid article{padding:30px;border:1px solid var(--line);border-radius:12px;background:white}.free-pro-grid article:last-child{background:#edf3ff}.free-pro-grid p{font-size:15px;color:var(--muted)}.sample-source{margin-top:24px}.hero-proof img{object-fit:contain}.hero-copy .free-summary{max-width:520px}@media(max-width:900px){.task-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ai-workflow,.home-pdf-example{gap:32px}}@media(max-width:600px){.task-grid,.ai-workflow,.home-pdf-example,.free-pro-grid{grid-template-columns:1fr}.task-grid{gap:18px}.free-pro-grid article{padding:24px}.compact-steps li{padding:17px 0;font-size:16px}.home-pdf-example>a{padding:20px}.home-pdf-example img{max-height:380px}}
/* Balance Chinese headings on small screens without changing content. */
@media(max-width:600px){html[lang="zh-CN"] h1{text-wrap:balance}html[lang="zh-CN"] .hero h1{font-size:31px;line-height:1.35;letter-spacing:-.035em}}
/* Keep home installation links intact and the mobile headline above the download action. */
.hero-home .hero-copy>.small a{display:inline-block}
@media(max-width:600px){html[lang="en"] .hero-home h1{font-size:clamp(32px,9.2vw,36px);line-height:1.16;text-wrap:balance}}
.plan-title-part{display:inline-block}
/* Task examples and instruction guide reuse the site's existing typography. */
.scenario-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}.scenario-cards p{font-size:15px;color:var(--muted)}.guide-head{max-width:950px}.guide-toc{display:flex;gap:12px 24px;flex-wrap:wrap;padding:20px 0;border-block:1px solid var(--line);font-size:14px;color:var(--blue)}.guide-copy{max-width:790px}.guide-copy p{color:var(--muted)}.guide-copy h2{margin-bottom:26px}.before-after,.pdf-comparison,.instruction-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.before-after{margin:32px 0 14px}.before-after figure{margin:0;border:1px solid var(--line);border-radius:9px;overflow:hidden}.instruction-step{min-width:0}.instruction-step h3{line-height:1.35}.instruction-step h3 span{color:var(--blue)}.instruction-step p{font-size:15px;color:var(--muted)}.instruction-step img{border:1px solid var(--line);border-radius:8px}.pdf-comparison article{background:var(--wash);padding:26px;border-radius:10px}.pdf-comparison p{font-size:15px}.pdf-comparison img{max-height:510px;width:auto;margin:24px auto;box-shadow:0 5px 18px #153a5420}.pdf-comparison .text-link{display:block}.guide-tip{max-width:830px;margin:28px 0 16px;border-left:3px solid var(--blue);padding:8px 0 8px 20px}.sample-source{font-size:13px;color:var(--muted)}.sample-source summary{cursor:pointer}.sample-source p{margin-top:12px}.guide-body .section{padding:58px 0}.closing>p:last-child{margin-top:26px}@media(max-width:720px){.scenario-cards,.before-after,.pdf-comparison,.instruction-grid{grid-template-columns:1fr}.guide-body .section{padding:40px 0}.guide-toc{gap:12px 18px}.pdf-comparison article{padding:20px}.instruction-grid{gap:32px}}

/* Optional website analytics; both choices have equal visual weight. */
.analytics-settings{border:0;background:none;color:inherit;text-decoration:underline;cursor:pointer;font:inherit;text-align:left;padding:0}
.analytics-consent{position:fixed;z-index:100;bottom:16px;left:16px;right:16px;max-width:640px;margin:auto;padding:20px;background:#fff;color:#17243a;border:1px solid #cbd5e1;border-radius:16px;box-shadow:0 8px 32px #17243a26;max-height:70vh;overflow:auto}
.analytics-consent[hidden]{display:none}.analytics-consent h2{margin:0 0 8px;font-family:inherit;font-size:18px;line-height:1.35;letter-spacing:0}
.analytics-consent .analytics-consent-detail{font-size:12px}
.analytics-consent p{margin:0 0 12px;font-size:14px;line-height:1.6}.analytics-consent a{color:#245ce8;text-decoration:underline}.analytics-consent>div{display:flex;flex-wrap:wrap;gap:12px}.analytics-consent button{padding:10px 16px;border:1px solid #245ce8;border-radius:8px;background:#fff;color:#173fa0;cursor:pointer;font:inherit}.analytics-consent button:focus-visible,.analytics-settings:focus-visible{outline:3px solid #245ce8;outline-offset:3px}