@font-face{font-family:Geist;src:url('/assets/fonts/geist-latin.woff2') format('woff2');font-style:normal;font-weight:100 900;font-display:swap}
:root{color-scheme:light;--ground:#f7f7f2;--ink:#2e392f;--muted:#6c7468;--line:#dddfd5;--accent:#58734f;--soft:#e9eddf;font-family:Geist,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--ground);font-synthesis:none;-webkit-font-smoothing:antialiased}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0}a{color:inherit;text-decoration:none}button{font:inherit}a,button{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:6px}::selection{background:#dce6d1;color:var(--ink)}
html:lang(zh-CN) [lang=en],html:lang(en) [lang=zh-CN]{display:none}img,svg{display:block}.page{max-width:1216px;margin:auto;padding:0 52px}.skip-link{position:absolute;top:10px;left:16px;padding:12px 18px;background:var(--ink);color:white;transform:translateY(-150%);z-index:10;border-radius:8px}.skip-link:focus{transform:none}
.header{height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:10px}.brand>span{font-size:29px;font-weight:600;letter-spacing:-1.9px}.header nav{display:flex;gap:29px;align-items:center;font-size:13px}.header nav>a{color:var(--muted);padding:10px 0}.header nav>a:hover{color:var(--ink)}.language{background:transparent;color:var(--ink);border:1px solid var(--line);border-radius:6px;min-width:43px;height:31px;font-size:11px;cursor:pointer}.language:hover{background:var(--soft)}
.hero{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(260px,.8fr);gap:60px;align-items:center;padding:91px 0 92px}.eyebrow{display:flex;align-items:center;gap:8px;font-size:10px;font-weight:500;letter-spacing:1.9px;margin:0 0 27px;color:var(--muted);line-height:1.6}.little-dot{width:6px;height:6px;background:#789364;border-radius:50%}.hero h1{font-family:"Noto Serif CJK SC","Songti SC",STSong,Georgia,serif;font-size:clamp(45px,5.4vw,66px);font-weight:500;letter-spacing:-2.6px;line-height:1.3;margin:0 0 27px}.accent-word{color:var(--accent)}html:lang(en) .hero h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(46px,5vw,68px);line-height:1.12;letter-spacing:-2.8px}.hero h1 em{font-weight:400;color:var(--accent)}.hero-description{font-size:15px;line-height:1.95;letter-spacing:.1px;color:var(--muted);margin:0 0 28px}.primary-link{display:inline-flex;align-items:center;gap:22px;border-radius:7px;padding:12px 17px;background:var(--ink);color:#f7f7f0;font-size:12px;line-height:1.5}.primary-link svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s}.primary-link:hover{background:#43513f}.primary-link:hover svg{transform:translateX(3px)}
.love-note{position:relative;transform:rotate(3deg);margin:11px 0 0;padding:28px 25px 39px;border:1px solid #daddce;border-radius:4px;background:#eeefe4;text-align:center;box-shadow:8px 9px 0 #e6e7dc77}.note-kicker{display:block;font-family:Georgia,serif;font-style:italic;font-size:14px;color:#77806c}.love-drawing{width:100%;max-width:255px;height:auto;margin:2px auto -5px}.heart-back{stroke:#cad1b9;stroke-width:1.2}.heart-front{stroke:#81936e;stroke-width:1.3}.thread-line{stroke:#b5bf9e;stroke-width:1.1;stroke-dasharray:3 5}.note-names{display:flex;justify-content:center;align-items:center;gap:15px;font:italic 29px Georgia,serif;letter-spacing:-.7px}.note-plus{font:17px Geist,sans-serif;color:#96a089}.love-note p{font-size:10px;letter-spacing:.2px;color:var(--muted);line-height:1.7;margin:15px 0 0}.note-corner{position:absolute;font-family:Georgia,serif;font-style:italic;font-size:11px;right:15px;bottom:14px;color:#7e886d}
.products{border-top:1px solid var(--line);padding:38px 0 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:25px}.section-heading .eyebrow,.story .eyebrow{font-size:9px;letter-spacing:1.65px;margin-bottom:12px}.section-heading h2,.story h2{font-size:23px;letter-spacing:-.75px;font-weight:500;line-height:1.45;margin:0}.section-note{font-size:11px;color:var(--muted);margin:0 0 4px;line-height:1.6}.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.product{display:flex;flex-direction:column;min-width:0;padding:24px 22px 0;border:1px solid var(--line);border-radius:12px;background:#fbfbf7}.product-top{display:flex;align-items:center;justify-content:space-between;gap:9px;margin-bottom:29px}.product-symbol{display:flex;align-items:center;justify-content:center;width:39px;height:39px;border-radius:10px;color:#5f7454;background:#e9eddf}.product-symbol svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.45;stroke-linecap:round;stroke-linejoin:round}.product-code .product-symbol{background:#e9e7df;color:#776a54}.product-home .product-symbol{background:#eee5de;color:#9a7967}.status{display:flex;align-items:center;gap:5px;font-size:9px;color:#63735c;line-height:1.5}.status i{width:4px;height:4px;border-radius:50%;background:#87977a;flex-shrink:0}.planned{color:#6e695f}.planned i{background:#aaa291}.product h3{margin:0 0 8px;font-size:24px;font-weight:500;letter-spacing:-.85px}.product-tagline{font-size:12px;line-height:1.7;min-height:21px;margin:0 0 13px;color:#495542}.product-description{font-size:12px;line-height:1.95;color:var(--muted);margin:0 0 28px;flex:1}.product-foot{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:15px 0;border-top:1px solid #e6e7de;font-size:9px;line-height:1.6;color:#65715e}.product-foot>span:first-child{font-family:Geist,monospace;font-size:10px;letter-spacing:-.2px;color:#5d6b57}.product-foot>span:not(:first-child){text-align:right}
.story{display:grid;grid-template-columns:1fr 1.25fr;gap:70px;padding:62px 0 55px;border-bottom:1px solid var(--line)}.story-copy p{font-size:13px;line-height:1.95;color:var(--muted);margin:0 0 13px}.contact-link{display:inline-flex;gap:20px;align-items:center;font-size:12px;padding:7px 0;border-bottom:1px solid #a5b096;margin-top:3px}.contact-link:hover{color:var(--accent)}.footer{display:flex;align-items:center;gap:25px;padding:25px 0 33px;font-size:10px;color:var(--muted);line-height:1.7}.footer p{margin:0;margin-right:auto}.footer p>span{color:var(--ink)}.footer a:hover{text-decoration:underline;text-underline-offset:4px}.copyright{font-size:9px;color:#6c7468}
@media(min-width:1600px){.hero{padding-top:110px;padding-bottom:110px}}
@media(max-width:940px){.page{padding:0 30px}.hero{gap:36px;padding:68px 0}.hero h1{font-size:52px}.hero-description{font-size:13px}.love-note{padding:23px 18px 35px}.product{padding:20px 17px 0}.product-top{flex-wrap:wrap;margin-bottom:22px;gap:13px}.product-description{font-size:12px}.product-foot{flex-wrap:wrap}.story{gap:40px}html:lang(en) .hero h1{font-size:52px}}
@media(max-width:680px){html{scroll-padding-top:20px}.page{padding:0 23px}.header{height:80px}.brand>span{font-size:27px}.brand img{width:29px;height:29px}.header nav{gap:18px;font-size:11px}.language{min-width:37px;height:29px}.hero{grid-template-columns:1fr;gap:42px;padding:56px 0 49px}.hero .eyebrow{font-size:8px;letter-spacing:1.5px;margin-bottom:23px}.hero h1{font-size:48px;letter-spacing:-2px;margin-bottom:24px}.hero-description{font-size:13px;line-height:1.9}.primary-link{font-size:12px}.love-note{width:min(280px,86%);margin:0 auto;padding:21px 23px 33px;transform:rotate(2deg)}.love-drawing{max-width:215px}.note-kicker{font-size:12px}.note-names{font-size:27px}.love-note p{font-size:9px;margin-top:13px}.note-corner{font-size:9px}.section-heading{display:block;margin-bottom:22px}.section-heading h2,.story h2{font-size:22px}.section-note{margin-top:9px}.products{padding-top:31px}.product-grid{grid-template-columns:1fr;gap:14px}.product{padding:23px 23px 0}.product-top{flex-wrap:nowrap;margin-bottom:22px}.product h3{font-size:25px}.product-tagline{font-size:13px;min-height:0}.product-description{font-size:13px;line-height:1.9;margin-bottom:22px}.status{font-size:10px}.product-foot{flex-wrap:nowrap;font-size:10px}.story{grid-template-columns:1fr;gap:20px;padding:42px 0 33px}.story-copy p{font-size:13px}.footer{flex-wrap:wrap;column-gap:18px;row-gap:12px;padding:22px 0 27px;font-size:10px}.footer p{flex-basis:100%;margin:0}.copyright{margin-left:auto}html:lang(en) .hero h1{font-size:48px;line-height:1.13}.desktop-break{display:none}}
@media(max-width:360px){.page{padding:0 18px}.header nav{gap:13px}.hero h1,html:lang(en) .hero h1{font-size:42px}.product{padding-left:18px;padding-right:18px}}
.product-foot a{font-size:11px;text-underline-offset:4px}.product-foot a:hover{text-decoration:underline}/* Product pages share a single reading column and the same section rhythm. */
.detail-page{max-width:1056px}
.detail-hero{max-width:800px;padding:56px 0 38px}
.detail-kicker{display:flex;align-items:center;flex-wrap:wrap;gap:12px 22px;margin-bottom:23px}
.detail-kicker .eyebrow{margin:0;font-size:12px;letter-spacing:1.5px;color:var(--ink)}
.detail-kicker .status{font-size:11px}
.detail-hero h1{font:500 44px/1.4 "Noto Serif CJK SC","Songti SC",STSong,Georgia,serif;letter-spacing:-1.2px;margin:0 0 22px}
.detail-hero h1 em{color:var(--accent);font-weight:400}
html:lang(en) .detail-hero h1{font-family:Georgia,"Times New Roman",serif;font-size:48px;line-height:1.15;letter-spacing:-1.5px}
.detail-lead{max-width:720px;color:var(--muted);font-size:15px;line-height:1.95;margin:0}
.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:18px 25px;margin-top:24px}
.text-link{font-size:13px;text-underline-offset:5px}.text-link:hover{text-decoration:underline}
.section-nav{display:flex;flex-wrap:wrap;gap:12px 30px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:12px;line-height:1.7;color:var(--muted)}
.section-nav a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:5px}
.detail-section{padding:38px 0 42px;border-top:1px solid var(--line);scroll-margin-top:20px}
.section-nav+.detail-section{border-top:0}
.detail-heading{margin-bottom:22px}
.detail-heading .eyebrow{font-size:9px;letter-spacing:1.2px;margin-bottom:9px}
.detail-heading h2{font-size:25px;font-weight:500;letter-spacing:-.6px;line-height:1.5;margin:0}
.section-intro{max-width:740px;font-size:14px;line-height:1.95;color:var(--muted);margin:0 0 23px}
.feature-grid{display:block}
.feature{display:grid;grid-template-columns:26px 190px minmax(0,1fr);gap:18px;align-items:baseline;padding:23px 0;border-top:1px solid var(--line);min-width:0}
.feature:last-child{padding-bottom:0}
.feature-number{font-size:11px;line-height:1.8;color:var(--accent);font-variant-numeric:tabular-nums}
.feature h3{font-weight:500;font-size:16px;line-height:1.75;letter-spacing:-.25px;margin:0}
.feature p,.principle-list p{font-size:14px;line-height:1.95;color:var(--muted);margin:0}
.connection-figure{margin:26px 0;padding:24px;border:1px solid #d9ddcc;border-radius:10px;background:#eef0e6}
.connection-flow{display:grid;grid-template-columns:minmax(0,1fr) 20px minmax(0,1.15fr) 20px minmax(0,1fr);gap:12px;align-items:stretch}
.connection-node{padding:8px;min-width:0}
.node-label{font-size:9px;letter-spacing:.7px;color:#63705d}
.connection-node h3{font-size:16px;font-weight:500;letter-spacing:-.2px;margin:14px 0 10px;line-height:1.6}
.connection-node p{font-size:12px;line-height:1.85;color:#63705d;margin:0}
.connector{align-self:center;justify-self:center;font-size:20px;color:#718365}
.connection-figure figcaption,.figure-note{font-size:11px;line-height:1.85;color:#63705d;margin:18px 0 0}
.principle-list{display:block}
.principle-list article{display:grid;grid-template-columns:234px minmax(0,1fr);gap:18px;padding:22px 0;border-top:1px solid var(--line)}
.principle-list article:last-child{padding-bottom:0}
.principle-list h3{font-weight:500;font-size:16px;line-height:1.75;letter-spacing:-.25px;margin:0}
.editorial-note{max-width:800px;padding:0 0 0 23px;border-left:2px solid #9aa98a}
.editorial-note p{font-size:14px;line-height:1.95;color:var(--muted);margin:0}
.editorial-note .editorial-lead{font-size:17px;line-height:1.95;color:var(--ink)}
.kit-list{padding-left:20px;margin:22px 0;font-size:14px;line-height:1.95;color:var(--ink)}
.kit-list li+li{margin-top:8px}
.progress-panel{border:1px solid var(--line);border-radius:10px;padding:25px 27px;background:#f0f2e9}
.progress-panel p{max-width:760px;font-size:14px;line-height:1.95;color:var(--muted);margin:0 0 17px}
.progress-panel .progress-label{font-size:12px;color:var(--accent);font-weight:500}
.related-links{display:flex;flex-wrap:wrap;gap:14px 26px;padding-top:5px;font-size:12px;line-height:1.8}
.related-links a{text-decoration:underline;text-decoration-color:#a5b096;text-underline-offset:5px}
.theme-specimens{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.theme-sample{border-radius:10px;border:1px solid #daddce;padding:24px;min-width:0}
.theme-sample>span{font-size:10px;letter-spacing:1.1px}
.theme-sample>strong{display:block;font-size:25px;font-weight:500;letter-spacing:-.7px;margin:25px 0 9px}
.theme-sample p{font-size:12px;line-height:1.8;margin:0}
.sample-lines{display:flex;gap:6px;margin-top:23px}
.sample-lines i{height:6px;flex:1;background:currentColor;opacity:.18;border-radius:3px}
.sample-lines i:first-child{opacity:.65;flex:1.5}
.sample-light{background:#fbfbf7;color:#49563f}.sample-dark{background:#292b28;color:#e0e7d8;border-color:#42473d}.sample-black{background:#111310;color:#dce6d3;border-color:#343b2c}
.figure-note{margin-bottom:22px}
@media(max-width:940px){
  .feature{grid-template-columns:24px 160px minmax(0,1fr);gap:14px}
  .principle-list article{grid-template-columns:198px minmax(0,1fr);gap:14px}
  .connection-figure{padding:20px}.connection-flow{gap:8px}.connection-node{padding:4px}
}
@media(max-width:680px){
  .detail-hero{padding:37px 0 28px}
  .detail-kicker{gap:10px 16px;margin-bottom:19px}.detail-kicker .eyebrow{font-size:11px}.detail-kicker .status{font-size:10px}
  .detail-hero h1{font-size:32px;line-height:1.45;letter-spacing:-.8px;margin-bottom:19px}
  html:lang(en) .detail-hero h1{font-size:35px;line-height:1.18;letter-spacing:-1px}
  .detail-lead{font-size:14px;line-height:1.95}.hero-actions{gap:15px;margin-top:21px}.hero-actions .primary-link,.text-link{font-size:12px}
  .section-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 16px;padding:17px 0;font-size:12px}
  .detail-section{padding:29px 0 32px}.detail-heading{margin-bottom:19px}.detail-heading .eyebrow{font-size:9px;letter-spacing:1px}.detail-heading h2{font-size:22px;line-height:1.55;letter-spacing:-.4px}
  .section-intro{font-size:14px;margin-bottom:20px}
  .feature{grid-template-columns:22px minmax(0,1fr);gap:6px 12px;padding:19px 0;align-items:baseline}
  .feature h3{font-size:16px;line-height:1.7}.feature p{grid-column:2;font-size:14px;line-height:1.9}
  .connection-figure{padding:19px;margin:22px 0}.connection-flow{grid-template-columns:1fr;gap:8px}.connection-node{padding:9px 4px}.connection-node h3{font-size:17px;margin:8px 0}.connection-node p{font-size:13px}.node-label{font-size:10px}.connector{transform:rotate(90deg);font-size:20px;line-height:1}
  .principle-list article{display:block;padding:19px 0}.principle-list h3{font-size:16px;margin:0 0 8px}.principle-list p{font-size:14px;line-height:1.9}
  .editorial-note{padding-left:17px}.editorial-note .editorial-lead{font-size:16px}.kit-list{margin:20px 0;font-size:14px}
  .progress-panel{padding:21px 20px}.progress-panel p{font-size:14px;line-height:1.9}.related-links{gap:14px 20px}
  .theme-specimens{grid-template-columns:1fr;gap:10px}
  .theme-sample{display:grid;grid-template-columns:1fr auto;align-items:center;column-gap:15px;padding:19px 20px}
  .theme-sample>span{font-size:10px}.theme-sample>strong{font-size:22px;margin:0;grid-column:2;grid-row:1/3}.theme-sample p{grid-column:1;grid-row:2;font-size:12px;margin-top:7px}.sample-lines{grid-column:1/-1;margin-top:16px}.sample-lines i{height:5px}
}
@media(max-width:360px){.detail-hero h1{font-size:29px}html:lang(en) .detail-hero h1{font-size:32px}.detail-heading h2{font-size:21px}}
.footer-links{display:flex;flex-wrap:wrap;gap:16px}.footer-links a[aria-current=page]{color:var(--ink)}.product h3 a:hover{color:var(--accent)}
.hero.home-intro{display:block;padding:48px 0 41px}.home-intro .eyebrow{margin-bottom:18px}.home-intro h1{font-size:48px;line-height:1.35;letter-spacing:-1.8px;margin-bottom:20px}.home-intro .hero-description{max-width:760px;margin-bottom:0;font-size:14px}html:lang(en) .home-intro h1{font-size:52px;line-height:1.12;letter-spacing:-2px}
@media(max-width:680px){.hero.home-intro{padding:36px 0 31px}.home-intro .eyebrow{margin-bottom:18px}.home-intro h1{font-size:37px;letter-spacing:-1.3px;line-height:1.4;margin-bottom:19px}.home-intro .hero-description{font-size:13px;line-height:1.9}html:lang(en) .home-intro h1{font-size:38px;line-height:1.15;letter-spacing:-1.4px}}
@media(max-width:360px){.home-intro h1{font-size:33px}html:lang(en) .home-intro h1{font-size:34px}}
@media(max-width:680px){.footer-links{flex-basis:100%;gap:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}