:root{color-scheme:light;--paper:#f6f5f0;--ink:#263e34;--muted:#647168;--line:#dddfd5;--green:#365d48;--serif:"Songti SC","SimSun",serif;--sans:system-ui,-apple-system,"Microsoft YaHei",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.8 var(--sans);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:5px}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--green);outline-offset:5px}[hidden]{display:none!important}.wrap{width:min(1120px,calc(100% - 96px));margin-inline:auto}.skip-link{position:absolute;top:-100px;left:20px;background:var(--ink);color:white;padding:10px 20px;z-index:2}.skip-link:focus{top:10px}.site-header{min-height:104px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:12px;font-size:17px;font-weight:600;white-space:nowrap}.brand-mark{width:33px;height:36px;border:1px solid #718574;border-radius:4px 4px 14px 4px;display:grid;place-items:center;font:23px var(--serif);color:var(--green)}nav{display:flex;align-items:center;gap:28px;font-size:13px}nav>a{white-space:nowrap}.owner-link{padding-left:24px;border-left:1px solid var(--line);color:var(--green)}.hero{padding:96px 0 94px;display:grid;grid-template-columns:1.3fr 1fr;gap:64px;align-items:center}.eyebrow{margin:0 0 22px;color:var(--muted);font-size:10px;font-weight:600;letter-spacing:2px;display:flex;align-items:center;gap:12px}.small-line{width:26px;height:1px;background:#7c8c7c}h1{margin:0 0 26px;font:clamp(34px,3.6vw,48px)/1.55 var(--serif);font-weight:500;letter-spacing:1px}.hero-description{max-width:420px;margin:0 0 30px;font-size:15px;line-height:2;color:var(--muted)}.text-link{font-size:13px;display:inline-flex;align-items:center;gap:22px;color:var(--green);font-weight:600}.learning-note{position:relative;overflow:hidden;min-height:350px;margin:0;padding:32px 32px 25px;background:#e9ede2;border:1px solid #d9dfd0;border-radius:3px 3px 48px 3px;box-shadow:7px 9px 0 #efefe7}.note-caption{font-size:11px;color:#647561;letter-spacing:1px;margin:0 0 20px}.note-quote{position:relative;z-index:1;margin:0 0 18px;font:30px/1.65 var(--serif);letter-spacing:2px}.note-description{position:relative;z-index:1;color:#65735f;font-size:12px;max-width:235px;margin:0 0 25px}.learning-cycle{display:flex;gap:0;list-style:none;padding:18px 0 0;margin:0;border-top:1px solid #cdd7c5;position:relative;z-index:1}.learning-cycle li{flex:1;font-size:12px;display:flex;flex-direction:column;gap:3px}.learning-cycle span{font-size:9px;letter-spacing:1px;color:#7e8c75}.note-decoration{position:absolute;right:12px;top:100px;writing-mode:vertical-rl;font:66px var(--serif);color:#d9e1cf;letter-spacing:10px;transform:rotate(7deg);user-select:none}.section{padding:66px 0;border-top:1px solid var(--line);scroll-margin-top:20px}.section-heading .eyebrow{margin-bottom:14px}h2{font:29px/1.5 var(--serif);font-weight:500;margin:0 0 12px}.section-heading>p:last-child{color:var(--muted);font-size:13px;margin:0}.method-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px;margin-top:40px}.method-card{border-top:1px solid #9eac98;padding-top:18px}.card-number{font-size:11px;letter-spacing:1px;color:#8b977f}h3{margin:16px 0 12px;font-size:17px;font-weight:500}.method-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.95}.design-grid{margin-top:38px;display:grid;grid-template-columns:1fr 1.1fr;gap:64px}.design-intro{padding:30px;background:#eeeee6;border-radius:3px}.tool-label{font-size:10px;letter-spacing:1px;color:#6b7b62}.design-intro h3{font:22px/1.6 var(--serif);margin:12px 0 18px}.design-intro p{font-size:13px;line-height:1.95;color:var(--muted);margin:0 0 12px}.design-intro p:last-child{margin-bottom:0}.design-details{margin:0}.design-details>div{padding:18px 0;border-bottom:1px solid var(--line)}.design-details>div:first-child{padding-top:0}.design-details>div:last-child{border-bottom:0;padding-bottom:0}.design-details dt{font-size:14px;font-weight:500}.design-details dt span{display:inline-block;width:26px;color:#7d8a70}.design-details dd{margin:7px 0 0 26px;color:var(--muted);font-size:12px;line-height:1.95}.about-section{display:grid;grid-template-columns:1fr 1.1fr;gap:64px}.about-copy p{font-size:13px;line-height:1.95;color:var(--muted);margin:0 0 14px}.about-copy .text-link{margin-top:8px}.site-footer{display:flex;justify-content:space-between;align-items:center;gap:18px;border-top:1px solid var(--line);padding-block:25px 30px;font-size:11px;color:var(--muted)}.footer-note{margin-left:20px;color:#8a9387}.footer-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.footer-links button{border:0;background:transparent;color:var(--muted);padding:0;cursor:pointer;font-size:11px}.footer-links button:hover{text-decoration:underline}.login-layout{min-height:calc(100svh - 194px);display:grid;place-items:center;padding-block:64px}.login-card{width:min(100%,440px);padding:40px;background:#eeeee6;border:1px solid var(--line);border-radius:3px 3px 32px 3px}.login-card h1{font-size:32px;margin-bottom:12px}.login-description{font-size:13px;line-height:1.9;color:var(--muted);margin:0 0 28px}.login-card label{display:block;font-size:13px;margin-bottom:9px}.login-card input{width:100%;min-height:48px;border:1px solid #bfc9b8;border-radius:4px;background:#fafaf6;padding:10px 12px;color:var(--ink);font-size:14px}.login-button{width:100%;margin-top:20px;min-height:46px;background:var(--green);color:#fff;border:0;border-radius:4px;cursor:pointer;font-size:14px}.login-button:disabled{opacity:.65;cursor:wait}.login-status{min-height:24px;margin:12px 0 0;font-size:12px;color:var(--green);overflow-wrap:anywhere}.login-help{font-size:12px;color:var(--muted);line-height:1.9;margin:18px 0 0;padding-top:18px;border-top:1px solid #d7dccf}.login-help summary{cursor:pointer}.login-help p{margin-bottom:0}.login-footer{justify-content:center}
@media(min-width:1440px){.hero{gap:100px}}
@media(max-width:800px){.wrap{width:calc(100% - 48px)}.site-header{min-height:88px;gap:16px}.brand{font-size:15px}nav{gap:16px}nav>a:not(.owner-link){display:none}.owner-link{padding-left:0;border-left:0}.hero{padding:56px 0 60px;gap:30px;grid-template-columns:1.15fr 1fr}h1{font-size:32px}.learning-note{min-height:320px;padding:25px 22px}.note-quote{font-size:27px}.hero-description{font-size:14px}.method-grid{gap:24px}.design-grid,.about-section{gap:30px}.section{padding-block:48px}.site-footer{align-items:flex-start}.footer-note{display:block;margin:4px 0 0}}
@media(max-width:580px){.wrap{width:calc(100% - 40px)}.site-header{min-height:80px}.brand{gap:9px}.brand-mark{width:28px;height:31px;font-size:20px}.owner-link{font-size:12px}.hero{grid-template-columns:1fr;padding-block:44px 48px;gap:36px}h1{font-size:33px;line-height:1.55;letter-spacing:0}.eyebrow{font-size:9px;letter-spacing:1.4px;margin-bottom:20px}.hero-description{max-width:340px;margin-bottom:20px}.learning-note{min-height:0;padding:25px 26px;border-bottom-right-radius:34px}.note-quote{font-size:28px;margin-bottom:14px}.note-description{max-width:245px;margin-bottom:20px}.note-decoration{right:25px;top:62px;font-size:60px}.note-caption{margin-bottom:16px}.learning-cycle{padding-top:15px}.method-grid{grid-template-columns:1fr;gap:26px;margin-top:28px}.method-card{padding-top:13px}.method-card h3{margin:7px 0 9px}.method-card p{font-size:13px}.section{padding-block:38px}h2{font-size:25px}.design-grid,.about-section{grid-template-columns:1fr;gap:26px}.design-grid{margin-top:28px}.design-intro{padding:24px}.design-details>div{padding-block:17px}.about-section .eyebrow{margin-bottom:14px}.site-footer{flex-direction:column;padding-block:23px;gap:13px}.site-footer>div:first-child{display:flex;gap:18px;align-items:center}.footer-note{margin:0}.footer-links{gap:12px}.login-layout{min-height:calc(100svh - 210px);padding-block:38px}.login-card{padding:28px 24px}.login-card h1{font-size:29px}.login-footer{align-items:center}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}