@charset "UTF-8";
:root{--paper:#f6f4ed;--white:#fffef9;--ink:#183e38;--muted:#64746c;--orange:#f0824f;--sage:#e4eadc;--line:#d9ded0;font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:26px}body{margin:0;font-size:16px;line-height:1.7}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit;touch-action:manipulation}a{color:inherit;text-decoration:none}p,h1,h2,h3{margin:0}button svg,a svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.6;flex-shrink:0}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #c76a35;outline-offset:5px}h2:focus{outline:none}[hidden]{display:none!important}svg{max-width:100%}small{font-size:13px}summary{cursor:pointer;list-style:none}summary::-webkit-details-marker{display:none}body:has(dialog[open]){overflow:hidden}.site-shell{width:calc(100% - 120px);max-width:1920px;margin:0 auto;padding:0}.skip{position:fixed;left:16px;top:-80px;padding:12px 20px;background:var(--ink);color:white;z-index:100}.skip:focus{top:12px}.masthead{min-height:104px;display:flex;align-items:center;gap:40px;border-bottom:1px solid var(--line)}.identity{display:flex;align-items:center;gap:16px;margin-right:auto}.identity strong{display:block;font-size:23px;letter-spacing:.04em}.identity small{display:block;color:var(--muted);font-size:11px;letter-spacing:.08em}.brand-mark{display:flex;gap:5px;transform:rotate(-13deg)}.brand-mark i{width:8px;height:28px;border-radius:4px;background:var(--ink)}.brand-mark i:nth-child(2){height:37px;background:var(--orange);margin-top:-5px}.brand-mark i:nth-child(3){height:23px}.masthead nav{display:flex;gap:30px;font-size:14px}.masthead nav a:hover{color:#b64f29}.tools-toggle{background:transparent;border:1px solid #aebbaa;padding:10px 17px;border-radius:100px;display:flex;align-items:center;gap:12px;font-size:13px;white-space:nowrap}.tools-toggle:hover{background:var(--sage)}.eyebrow{font-size:12px;letter-spacing:.1em;font-weight:650;line-height:1.6}.small-dot{display:inline-block;width:7px;height:7px;background:var(--orange);border-radius:50%;margin-right:6px}.button{display:inline-flex;align-items:center;justify-content:center;gap:14px;padding:13px 20px;border-radius:8px;border:1px solid transparent;font-size:14px;font-weight:650;line-height:1.5;white-space:nowrap;transition:background .15s,transform .15s}.button:hover{transform:translateY(-1px)}.button-orange{color:#183c35;background:var(--orange)}.button-orange:hover{background:#fa9562}.button-dark{background:var(--ink);color:#faf7e9}.button-dark:hover{background:#285349}.button-light{background:var(--white);border-color:var(--line)}.button-light:hover{background:var(--sage)}.plain-link{display:inline-flex;align-items:center;gap:10px;font-size:13px;border-bottom:1px solid transparent}.plain-link:hover{border-color:var(--ink)}.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;padding:64px 0 56px}.hero h1{font-size:clamp(35px,3.8vw,50px);letter-spacing:-.045em;line-height:1.42;margin:20px 0 24px;font-weight:750}.accent-underline{position:relative;z-index:0;white-space:nowrap}.accent-underline:after{content:"";position:absolute;bottom:5px;left:1px;right:3px;height:10px;z-index:-1;background:#e8b996;transform:rotate(-1deg)}.hero-intro{font-size:15px;line-height:1.95;color:#5b7166;max-width:500px}.hero-actions{display:flex;align-items:center;gap:24px;margin-top:29px;flex-wrap:wrap}.hero-foot{display:flex;gap:22px;color:#728175;font-size:11px;margin-top:25px}.hero-foot span:before{content:"✓";color:#9f733e;margin-right:7px}.canvas-screen{display:block;width:100%;height:auto}.workflow-heading{display:flex;justify-content:space-between;gap:20px;margin-bottom:18px;align-items:center}.workflow-heading>span{font-size:12px;color:var(--muted)}.compact-hero{padding:40px 0 30px}.compact-hero h1{font-size:36px;line-height:1.4;margin:10px 0}.compact-hero>p:last-child{color:var(--muted);font-size:15px}.contact-section{margin:56px 0 35px;padding:36px 40px;background:var(--sage);border-radius:16px;display:flex;align-items:center;gap:40px;justify-content:space-between}.contact-symbol,.contact-footnote{display:none}.contact-intro h2{font-size:27px;margin:8px 0 12px}.contact-intro>p:not(.eyebrow){font-size:14px;max-width:610px;color:#5c7161}.contact-ways{min-width:250px}.wechat-card{background:var(--white);padding:20px 25px;border-radius:12px;display:grid;grid-template-columns:1fr auto;gap:9px 20px;align-items:center}.contact-channel{font-size:11px;display:flex;align-items:center;gap:6px;color:var(--muted)}.contact-channel svg{width:17px;height:17px;fill:none;stroke:currentColor}.contact-account-label{display:none}.wechat-card strong{grid-column:1;letter-spacing:.035em;font-size:21px}.contact-copy{grid-column:2;grid-row:1/3;font-size:12px;padding:11px 13px}.contact-copy svg{display:none}.contact-extra{font-size:12px;margin:12px 0}.contact-extra small{display:block;color:var(--muted)}.contact-extra-link{font-size:12px}.footer{padding:22px 0 30px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:25px;font-size:11px;color:#718174}.footer>div:first-child{display:flex;gap:15px;align-items:center}.footer strong{color:var(--ink)}.filing-links{display:flex;gap:15px;align-items:center;flex-wrap:wrap}.filing-link{display:flex;gap:5px;align-items:center}.filing-icon{width:15px;height:16px;object-fit:contain}.footer a:hover{text-decoration:underline}.tool-sidebar{position:fixed;right:0;top:0;bottom:0;width:380px;max-width:92vw;background:#e7ecde;z-index:70;padding:32px;overflow-y:auto;transform:translateX(100%);visibility:hidden;transition:transform .2s,visibility .2s;box-shadow:-15px 0 60px #001e1b16}.tool-sidebar.open{transform:translateX(0);visibility:visible}.drawer-shade{position:fixed;inset:0;background:#112d276b;border:0;z-index:60}.drawer-open{overflow:hidden}.sidebar-top{position:relative;padding-top:20px;margin-bottom:23px}.sidebar-top>p{font-size:10px;letter-spacing:.15em;color:var(--muted);margin:8px 0}.sidebar-top h2{font-size:23px;margin-bottom:14px}.sidebar-top>span:last-child{font-size:13px;color:#5a705c}.sidebar-spark{color:#c46738;font-size:30px}.drawer-close{position:absolute;right:-10px;top:-20px;background:transparent;border:0;font-size:30px;padding:4px 15px}.share-group{border-top:1px solid #c6d4ba;padding-top:18px;margin-top:20px}.share-group>h3{font-size:15px}.share-group>p{font-size:12px;margin:3px 0 12px;color:var(--muted)}.share-card{display:flex;gap:13px;border:1px solid #c8d5bd;background:#fffef9;border-radius:10px;width:100%;padding:17px;text-align:left;margin-top:9px}.share-card:hover{border-color:#93aa85;box-shadow:0 4px 15px #294b3410}.share-icon{width:35px;height:35px;background:#e0ead5;border-radius:9px;font-size:22px;font-weight:700;text-align:center;flex-shrink:0}.share-copy{display:block}.share-copy strong{font-size:15px;display:block;margin-bottom:5px}.share-copy small{display:block;font-size:12px;color:#5d715b;line-height:1.8}.share-action{display:flex;align-items:center;gap:10px;font-size:12px;margin-top:12px;color:#aa512a}.share-action svg{width:15px;height:15px}.sidebar-bottom{display:flex;flex-direction:column;gap:14px;border-top:1px solid #c6d4ba;padding-top:20px;margin-top:22px;font-size:12px}.sidebar-bottom>span{color:var(--muted)}.sidebar-bottom a{display:flex;justify-content:space-between;gap:20px;align-items:center}.sidebar-contact{background:var(--ink);color:white;padding:13px;border-radius:7px}dialog{color:var(--ink);background:var(--white);border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 90px #001e1b30}dialog::backdrop{background:#0d292ac9;backdrop-filter:blur(4px)}.share-dialog{max-width:610px;width:calc(100% - 32px);padding:40px;max-height:85vh}.dialog-close{position:absolute;right:13px;top:9px;background:none;border:0;font-size:30px;padding:4px 14px}.share-dialog-mark{display:block;font-size:30px;color:#bf622f;margin:14px 0}.share-dialog h2{font-size:28px;margin-bottom:13px}.share-lead{color:#5f7365;font-size:14px;margin-bottom:20px}.share-body p{font-size:14px;margin:14px 0}.share-meta,.share-code{font-size:12px;color:var(--muted);margin:18px 0}.text-button{border:0;background:none;color:#b0562e;text-decoration:underline}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,12px);max-width:calc(100vw - 30px);width:max-content;padding:13px 22px;background:#193e36;color:#fffbee;border:1px solid #587763;border-radius:10px;box-shadow:0 6px 25px #001a2525;font-size:14px;opacity:0;transition:.2s;pointer-events:none;z-index:200}.toast.show{opacity:1;transform:translate(-50%,0)}

@media(max-width:1000px){.site-shell{width:auto;padding:0 28px}.masthead{gap:22px;min-height:90px}.masthead nav{gap:20px}.hero{gap:28px;padding:42px 0}.hero h1{font-size:36px}.hero-intro{font-size:14px}.hero-actions{gap:18px}.hero-foot{gap:14px}.contact-section{padding:28px;gap:24px}.wechat-card{display:block;min-width:210px}.wechat-card strong{display:block;margin:5px 0 12px}.footer{flex-direction:column;gap:12px}}
@media(max-width:700px){body{font-size:15px}.site-shell{padding:0 20px}.masthead{gap:12px;min-height:82px;flex-wrap:wrap;align-content:center;padding:16px 0}.identity{gap:11px}.identity strong{font-size:20px}.identity small{font-size:10px}.brand-mark{gap:3px}.brand-mark i{width:6px;height:24px}.brand-mark i:nth-child(2){height:31px}.brand-mark i:nth-child(3){height:21px}.masthead nav{order:3;flex-basis:100%;font-size:12px;padding-top:5px;gap:24px}.tools-toggle{font-size:11px;padding:8px 11px;gap:6px}.tools-toggle svg{width:15px;height:15px}.hero{display:block;padding:32px 0}.hero h1{font-size:36px;margin:14px 0 18px}.hero .eyebrow{font-size:11px}.hero-actions{margin-top:22px;gap:17px}.hero-intro{font-size:14px}.hero-foot{margin-top:18px}.button{padding:12px 16px;font-size:13px;gap:9px}.hero-actions .plain-link{font-size:12px}.workflow-heading{display:block;margin-bottom:12px}.workflow-heading>span{display:none}.eyebrow{font-size:11px}.contact-section{margin-top:34px;display:block;padding:24px}.contact-intro h2{font-size:24px}.contact-intro>p:not(.eyebrow){font-size:13px}.contact-ways{margin-top:20px}.wechat-card{display:grid;min-width:0;padding:16px}.wechat-card strong{font-size:19px;margin:0}.footer{font-size:10px}.footer>div:first-child{flex-wrap:wrap}.filing-links{gap:10px}.share-dialog{padding:30px 24px}.compact-hero h1{font-size:29px}.compact-hero{padding:30px 0 26px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
.toast{max-width:min(520px,calc(100% - 32px));white-space:normal}
@media(max-width:600px){.contact-ways{min-width:0}.wechat-card{display:block}.wechat-card strong{margin-top:7px;overflow-wrap:anywhere}.contact-copy{margin-top:13px}.contact-section{padding:22px}}

/* The overview shows teaching outputs. All tool entries share one visual treatment. */
.hero{gap:clamp(40px,4vw,88px);padding:54px 0 44px;grid-template-columns:1.05fr 1fr}
.hero-copy{min-width:0}
.result-preview{background:var(--white);border:1px solid #d9ded0;border-radius:14px;padding:28px 32px;box-shadow:0 16px 50px #253e2c07}
.preview-heading{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding-bottom:18px;border-bottom:1px solid var(--line);font-weight:650;font-size:18px}
.preview-heading small{font-size:12px;font-weight:400;color:var(--muted)}
.preview-result{display:flex;gap:20px;margin-top:22px}
.preview-number{font:italic 25px/1.4 Georgia,serif;color:#99a78e;flex-shrink:0}
.preview-result-body{min-width:0;flex:1}
.preview-label{display:flex;align-items:baseline;gap:18px;justify-content:space-between;margin-bottom:10px}
.preview-label strong{font-size:18px}.preview-label>span{font-size:12px;color:#829078}
.preview-result-body>p{font-size:16px;line-height:1.9;color:#5b6f60}
.preview-assets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.preview-assets figure{margin:0;min-width:0}.preview-assets svg{display:block;width:100%;background:#e5e5d8;border:1px solid #d9ded0;border-radius:5px;overflow:hidden}
.preview-assets figcaption{font-size:12px;color:#627361;margin-top:7px}
.preview-shots{display:grid;grid-template-columns:1fr 20px 1fr;gap:12px;align-items:center;font-size:14px;color:#5d705e}
.preview-shots>span{padding:10px 13px;background:#f1f2e9;border-left:2px solid #bdc8b0;line-height:1.8}
.preview-shots b{display:block;font-size:12px;color:#3e5f48;margin-bottom:2px}.preview-shots i{font-style:normal;color:#9aa58e;text-align:center}
.preview-foot{border-top:1px solid var(--line);margin-top:22px;padding-top:16px;font-size:12px;color:#76816c;letter-spacing:.03em}
.tool-spotlight{margin:0 0 38px;padding:18px 0 28px;border-bottom:1px solid var(--line)}
.spotlight-heading{display:flex;align-items:baseline;gap:22px;margin-bottom:15px}.spotlight-heading h2{font-size:17px}.spotlight-heading p{font-size:13px;color:var(--muted)}
.spotlight-tools{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.spotlight-card{background:var(--white);border:1px solid var(--line);border-radius:8px;display:flex;align-items:center;gap:16px;padding:20px 23px;text-align:left;width:100%;transition:background .15s,border-color .15s}
.spotlight-card:hover{background:#edf0e5;border-color:#a7b49c}
.tool-monogram{display:flex;align-items:center;justify-content:center;width:40px;height:42px;border-radius:7px;background:#ebeee4;color:#53664c;font-weight:650;font-size:22px;flex-shrink:0}
.spotlight-copy{flex:1;min-width:0}.spotlight-name strong{font-size:17px;font-weight:650}.spotlight-copy small{display:block;font-size:14px;line-height:1.75;color:var(--muted);margin-top:4px}.spotlight-arrow{font-size:20px;color:#829176}
@media(min-width:1001px){
 :root{--reading:18px;--support:16px}
 body{font-size:var(--reading)}
 .masthead{min-height:116px;gap:46px}.identity strong{font-size:27px}.identity small{font-size:13px}.masthead nav{font-size:17px;gap:36px}.tools-toggle{font-size:16px;padding:12px 20px}
 .eyebrow{font-size:14px}.hero h1{font-size:clamp(44px,4vw,80px);line-height:1.34;letter-spacing:-.04em;margin:24px 0 28px}
 .hero-intro{font-size:var(--reading);line-height:1.95;max-width:760px}.hero-actions{margin-top:34px;gap:28px}.button{font-size:var(--support);padding:16px 24px}.plain-link{font-size:var(--support)}
 .hero-foot{font-size:14px;gap:26px;margin-top:28px}.workflow-heading>span{font-size:15px}
 .preview-heading{font-size:22px}.preview-heading small{font-size:14px}.result-preview{padding:28px 30px}.preview-result{gap:20px;margin-top:20px}
 .preview-number{font-size:30px}.preview-label strong{font-size:21px}.preview-label>span{font-size:14px}.preview-result-body>p{font-size:var(--reading)}
 .preview-assets{gap:12px}.preview-assets svg{max-height:120px}.preview-assets figcaption{font-size:14px}.preview-shots{font-size:var(--support)}.preview-shots b{font-size:14px}.preview-foot{font-size:14px}
 .spotlight-heading h2{font-size:21px}.spotlight-heading p{font-size:var(--support)}.spotlight-name strong{font-size:20px}.spotlight-copy small{font-size:var(--support)}
 .compact-hero{padding:54px 0 36px}.compact-hero h1{font-size:44px}.compact-hero>p:last-child{font-size:var(--reading)}
 .contact-section{padding:42px 48px;gap:48px}.contact-intro h2{font-size:34px}.contact-intro>p:not(.eyebrow){font-size:var(--reading);max-width:1000px}.contact-ways{min-width:330px}.contact-channel{font-size:14px}.wechat-card strong{font-size:24px}.contact-copy{font-size:15px}.footer{font-size:14px}
 .tool-sidebar{width:460px;padding:40px}.sidebar-top h2{font-size:28px}.sidebar-top>span:last-child,.share-group>p,.sidebar-bottom{font-size:16px}.share-group>h3,.share-copy strong{font-size:20px}.share-copy small,.share-action{font-size:16px}
 .share-dialog{max-width:760px;padding:48px}.share-dialog h2{font-size:36px}.share-lead,.share-body p{font-size:var(--reading)}.share-meta,.share-code{font-size:15px}
}
@media(min-width:1800px){
 :root{--reading:20px;--support:18px}
 .masthead{min-height:128px}.hero{padding-top:62px;padding-bottom:52px}.hero-actions{margin-top:40px}.hero-foot{font-size:16px}
 .result-preview{padding:32px 34px}.preview-heading{font-size:23px}.preview-label strong{font-size:21px}.preview-result{margin-top:25px}.preview-assets svg{max-height:120px}.preview-assets figcaption,.preview-label>span,.preview-heading small,.preview-foot{font-size:16px}.preview-shots b{font-size:16px}
 .spotlight-card{padding:24px 28px}.spotlight-name strong{font-size:22px}.tool-monogram{width:48px;height:48px;font-size:24px}
}
@media(min-width:1600px){.preview-result-body{display:grid;grid-template-columns:120px minmax(0,1fr);gap:18px;align-items:start}.preview-label{display:block;margin:0}.preview-label strong,.preview-label>span{display:block}.preview-label>span{margin-top:6px}.preview-result{margin-top:26px}.preview-shots{font-size:15px;gap:9px;grid-template-columns:1fr 14px 1fr}.preview-shots>span{padding:9px 10px}.preview-assets figcaption{font-size:14px}.preview-foot{margin-top:26px}}
@media(max-width:1000px){.hero{gap:30px}.result-preview{padding:22px}.preview-heading{font-size:16px}.preview-heading small{font-size:10px}.preview-result{gap:12px;margin-top:18px}.preview-label{gap:8px}.preview-label strong{font-size:16px}.preview-label>span{font-size:10px}.preview-result-body>p{font-size:14px}.preview-assets{gap:7px}.preview-assets figcaption{font-size:10px}.preview-shots{font-size:12px;gap:7px;grid-template-columns:1fr 12px 1fr}.preview-shots>span{padding:8px}.preview-foot{font-size:10px}.spotlight-card{padding:16px;gap:12px}.spotlight-name strong{font-size:16px}.spotlight-copy small{font-size:12px}}
@media(max-width:700px){.hero{display:block;padding:32px 0 24px}.result-preview{margin-top:32px;padding:22px 20px}.preview-heading{font-size:17px}.preview-result{gap:14px}.preview-label strong{font-size:17px}.preview-label>span{font-size:11px}.preview-result-body>p{font-size:14px}.preview-number{font-size:25px}.preview-assets figcaption{font-size:11px}.preview-shots{font-size:12px}.preview-foot{font-size:11px}.tool-spotlight{margin-bottom:28px;padding:16px 0 24px}.spotlight-heading{display:block;margin-bottom:13px}.spotlight-heading h2{font-size:17px}.spotlight-heading p{font-size:12px;margin-top:4px}.spotlight-tools{grid-template-columns:1fr;gap:9px}.spotlight-card{padding:15px 17px;gap:15px}.spotlight-copy small{font-size:13px}.tool-monogram{width:36px;height:38px;font-size:20px}}
@media(max-width:360px){.hero h1{font-size:30px}.result-preview{padding:19px 15px}.preview-heading{font-size:16px}.preview-heading small{font-size:9px}.preview-result{gap:10px}.preview-label strong{font-size:15px}.preview-assets figcaption{font-size:10px}.preview-shots{font-size:11px}}