@font-face{font-family:Sora;src:url('./sora.woff') format('woff');font-weight:100 800;font-display:swap}
:root{--forest:#102a25;--forest-light:#173c35;--paper:#f4f3ec;--ink:#1c302b;--muted:#54615a;--sage:#bad7c3;--gold:#d2be86;--line:#cdd3c9;--shell:1200px;color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--forest);color:var(--paper);font-family:Sora,'PingFang SC','Microsoft YaHei','Noto Sans CJK SC',sans-serif;font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}img,svg,video{max-width:100%}img{display:block;height:auto}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:3px solid #ae8b32;outline-offset:6px}::selection{background:#d2be86;color:#102a25}h1,h2,h3,h4,p{margin:0}h1,h2{font-family:'Songti SC','Noto Serif CJK SC','SimSun',serif;font-weight:600;letter-spacing:-.03em}h1{font-size:clamp(44px,5.5vw,76px);line-height:1.27}h2{font-size:clamp(30px,3.2vw,42px);line-height:1.45}h3{font-weight:550}section[id]{scroll-margin-top:110px}.shell{width:min(var(--shell),calc(100% - 96px));margin-inline:auto}.eyebrow{font-size:12px;letter-spacing:.13em;font-weight:500;line-height:1.8;color:var(--gold);margin-bottom:24px}.paper{background:var(--paper);color:var(--ink)}.paper .eyebrow{color:#617362}.site-header{position:sticky;top:0;z-index:20;background:rgba(16,42,37,.97);border-bottom:1px solid #ffffff17}.header-inner{width:min(1360px,calc(100% - 96px));margin:auto;display:flex;align-items:center;justify-content:space-between;min-height:94px;gap:36px}.brand{display:inline-block;flex-shrink:0}.brand img{width:190px}.site-header nav{display:flex;gap:36px;align-items:center;font-size:13px}.site-header nav a{position:relative;padding:12px 0;color:#c8d2c7;transition:color .2s}.site-header nav a:hover,.site-header nav a[aria-current]{color:#fff}.site-header nav a[aria-current]::after{content:'';position:absolute;width:14px;height:2px;bottom:3px;left:0;background:var(--gold)}.menu-toggle{display:none;border:0;background:none;padding:12px;width:48px;height:48px;color:#fff}.menu-toggle span{display:block;height:1px;width:24px;background:currentColor;margin:6px 0;transition:transform .2s}.skip-link{position:fixed;top:8px;left:16px;z-index:50;transform:translateY(-150%);padding:10px 16px;background:var(--paper);color:var(--ink)}.skip-link:focus{transform:none}
.hero{display:grid;grid-template-columns:1.03fr 1fr;gap:64px;align-items:center;padding-block:82px 96px;min-height:710px}.hero-copy{max-width:560px}.tagline{font-size:13px;letter-spacing:.04em;color:var(--sage);margin-top:26px}.hero-intro{color:#d5ded1;font-size:16px;line-height:2;margin-top:34px;max-width:440px}.hero-note{color:#b4c2b5;font-size:13px;margin-top:18px;max-width:440px}.hero-actions{display:flex;gap:30px;align-items:center;flex-wrap:wrap;margin-top:36px}.button{display:inline-flex;min-height:52px;padding:12px 23px;gap:34px;align-items:center;justify-content:space-between;font-size:13px;font-weight:500;transition:background .2s,transform .2s}.button-light{background:var(--sage);color:var(--forest)}.button-light:hover{background:#d1e4d5;transform:translateY(-2px)}.text-link{font-size:12px;color:#d6decf;padding:12px 0}.text-link span{margin-left:10px}.delta-field{position:relative;width:100%;height:470px;align-self:center}.field-caption{position:absolute;top:0;left:0;right:0;display:flex;justify-content:space-between;border-top:1px solid #bad7c329;padding-top:12px;font-size:10px;letter-spacing:.08em;color:#afc0b0}.field-live{color:var(--gold)}.field-live::before{content:'';width:4px;height:4px;display:inline-block;vertical-align:middle;border-radius:50%;background:var(--gold);margin-right:7px}.delta-symbol,.feedback-orbit{position:absolute;top:99px;left:50%;transform:translateX(-50%);width:310px;height:310px}.delta-symbol{filter:drop-shadow(0 14px 30px #00000018)}.feedback-orbit{width:338px;height:338px;top:85px}.vertex{position:absolute;text-align:center;z-index:2;display:block}.vertex strong{display:block;font-size:21px;font-weight:500;letter-spacing:.1em}.vertex span{display:block;font-size:10px;color:#b5c7b5;white-space:nowrap}.vertex:hover strong{color:var(--gold)}.vertex-top{top:36px;left:50%;transform:translateX(-50%)}.vertex-top::after{content:'';display:block;width:1px;height:23px;background:#8fa68d80;margin:7px auto 0}.vertex-left{left:calc(50% - 148px);top:387px;transform:translateX(-50%)}.vertex-right{left:calc(50% + 148px);top:387px;transform:translateX(-50%)}.delta-center{position:absolute;top:257px;left:50%;transform:translateX(-50%);text-align:center;color:#d1ddca;font-size:12px;line-height:1.75;letter-spacing:.12em}.field-foot{position:absolute;bottom:-5px;left:0;right:0;text-align:center;color:#a5b8a7;font-size:10px;letter-spacing:.02em}
.section{padding-block:98px;border-bottom:1px solid var(--line)}.section-heading .eyebrow{margin-bottom:18px}.section-heading h2{margin-bottom:24px}.section-heading.horizontal{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:45px}.section-heading.horizontal h2{margin-bottom:0}.heading-note{color:var(--muted);font-size:13px;line-height:1.9}.inline-link{display:inline-flex;align-items:center;gap:25px;min-height:44px;font-size:13px;border-bottom:1px solid #718775;transition:gap .2s}.inline-link:hover{gap:32px}.intro-section{display:grid;grid-template-columns:1fr 1.08fr;gap:92px}.intro-prose p,.prose p{color:var(--muted);margin-bottom:22px;line-height:2}.intro-prose .large-copy,.large-copy{font-family:'Songti SC','Noto Serif CJK SC','SimSun',serif;font-size:29px;color:var(--ink);line-height:1.65;margin-bottom:30px}.core-list{border-top:1px solid var(--line)}.core-row{display:grid;grid-template-columns:70px 170px 1fr 30px;gap:24px;align-items:start;padding:34px 0;border-bottom:1px solid var(--line);transition:background .2s}.core-row:hover{background:#eaece3}.row-number{font-family:Sora,sans-serif;font-size:11px;color:#5b6d55;padding-top:8px}.core-row h3{font-family:'Songti SC','Noto Serif CJK SC','SimSun',serif;font-size:29px}.core-row h4{font-size:15px;font-weight:500;margin:2px 0 9px}.core-row p{font-size:14px;color:var(--muted)}.row-arrow{font-size:22px;color:#6b7c69}.feedback-line{display:flex;gap:22px;align-items:center;flex-wrap:wrap;padding-top:29px;font-size:12px;color:#536953}.feedback-line i{font-style:normal;color:#81937f}.feedback-line p{margin-left:auto;font-size:12px;color:#637162}.practice-section{display:grid;grid-template-columns:1fr 1.08fr;gap:92px}.practice-intro{font-size:16px;color:var(--muted);line-height:2;margin-bottom:30px}.practice-list article{border-top:1px solid var(--line);padding-block:26px}.practice-list article:last-child{padding-bottom:0}.practice-list article>span{font-size:10px;letter-spacing:.07em;color:#5b6d55}.practice-list h3{font-size:20px;margin:10px 0}.practice-list p:not(.practice-intro){color:var(--muted);font-size:14px;line-height:1.95}.ai-section{background:#193b33;color:var(--paper);padding-block:90px}.ai-grid{display:grid;grid-template-columns:1fr 1.08fr;gap:92px}.ai-prose p{color:#d1dccf;line-height:2;margin-bottom:18px;font-size:15px}.ai-prose p:last-child{margin:26px 0 0;padding-top:23px;border-top:1px solid #bad7c337;font-size:13px;color:#b2c5af}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.topic-grid a{padding:33px 30px 35px 0}.topic-grid a+a{padding-left:30px;border-left:1px solid var(--line)}.topic-grid span{font-size:10px;letter-spacing:.04em;color:#5b6d55}.topic-grid h3{font-family:'Songti SC','Noto Serif CJK SC','SimSun',serif;font-size:26px;margin:16px 0}.topic-grid h3 i{font-family:Sora,sans-serif;font-style:normal;float:right;color:#799079;font-size:20px}.topic-grid p{font-size:13px;color:var(--muted)}.topic-grid a:hover h3{color:#497450}.quiet-note{margin-top:25px;font-size:12px;color:var(--muted)}.about-teaser{display:grid;grid-template-columns:1fr 1.08fr;gap:92px;border:0}.about-teaser>div p{max-width:480px;color:var(--muted);margin:22px 0;font-size:15px}.site-footer{width:min(1360px,calc(100% - 96px));margin:auto;padding:50px 0 24px}.footer-top{display:flex;align-items:center;gap:45px;padding-bottom:35px;border-bottom:1px solid #bad7c32c}.footer-top p{font-size:12px;color:#b2c3af}.back-top{margin-left:auto;font-size:11px;color:#b8cab6}.back-top span{margin-left:12px}.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:22px;font-size:10px;color:#9bb49e;gap:24px}.footer-bottom nav{display:flex;gap:28px;flex-wrap:wrap}.footer-bottom a:hover{color:#fff}
.page-hero{padding-block:72px 76px}.page-hero h1{font-size:clamp(36px,4.7vw,62px)}.page-lead{max-width:740px;line-height:2;color:#c6d4c3;font-size:15px;margin-top:28px}.reading-layout{display:grid;grid-template-columns:240px minmax(0,700px);justify-content:space-between;gap:70px;padding-block:80px 100px}.reading-nav{position:sticky;top:130px;align-self:start;display:flex;flex-direction:column;gap:12px;color:#5b6d55;font-size:12px}.reading-nav>span{font-size:10px;letter-spacing:.08em;padding-bottom:16px;margin-bottom:4px;border-bottom:1px solid var(--line)}.reading-nav a{padding:5px 0}.reading-nav a:hover{color:var(--forest)}.prose h2{font-size:30px;line-height:1.55;margin-bottom:24px}.article-prose section+section{margin-top:58px;border-top:1px solid var(--line);padding-top:44px}.prose p{font-size:16px}.prose blockquote{margin:32px 0;padding:10px 0 10px 24px;border-left:2px solid #80967a;color:var(--ink);font-family:'Songti SC','SimSun',serif;font-size:24px;line-height:1.7}.article-loop{background:#e7ecdf;padding:25px 30px;margin:28px 0;display:flex;gap:22px;flex-wrap:wrap;align-items:center}.article-loop>span{font-size:21px}.article-loop b{font-size:15px;font-weight:400;color:#71876b}.article-loop p{width:100%;font-size:12px;line-height:1.9;margin:0}.prose .article-end{margin-top:50px;font-size:12px;color:#5b6d55}.about-page{padding-block:80px 95px;display:grid;grid-template-columns:280px minmax(0,700px);justify-content:space-between;gap:70px}.about-profile{align-self:start;border-top:1px solid var(--line);padding-top:35px}.about-profile img{width:130px;margin-bottom:28px}.about-profile h2{font-family:Sora,sans-serif;font-size:30px}.about-profile p{font-size:13px;color:var(--muted);margin:15px 0 40px}.about-profile>span{font-size:10px;color:#5b6d55}.about-page article>h2{margin-top:45px;font-size:28px}.library-section{min-height:490px}.library-intro{display:flex;align-items:center;justify-content:space-between;gap:25px;padding-bottom:35px}.library-intro h2{font-size:28px}.library-controls{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-block:20px}.filter-group{display:flex;gap:6px;flex-wrap:wrap}.filter-group button{font-size:12px;min-height:42px;padding:8px 14px;border:1px solid transparent;background:none;color:#63745d}.filter-group button[aria-pressed="true"]{background:var(--forest-light);color:var(--paper)}.filter-group button:hover{border-color:#a3b49a}.media-filters button{font-size:11px}.library-empty{padding:70px 0;color:var(--muted);font-size:15px}.content-entry{display:block;padding:28px 0;border-bottom:1px solid var(--line)}.content-entry .entry-meta{font-size:11px;color:#5b6d55}.content-entry h3{font-size:24px;line-height:1.6;margin:10px 0}.content-entry p{color:var(--muted);font-size:14px;max-width:850px}.content-entry:hover h3{color:#497450}.published-article{max-width:800px;padding-block:70px 90px}.published-article img,.published-article video{height:auto;max-width:100%;margin-block:25px}.published-article h2,.published-article h3{margin-top:35px}.published-article ul,.published-article ol{padding-left:24px;color:var(--muted)}.published-article a:not(.inline-link){text-decoration:underline;text-underline-offset:4px}.published-article pre{overflow:auto;padding:22px;background:#e7ebdf;font-size:13px}.published-article table{display:block;overflow:auto;border-collapse:collapse;margin:28px 0;font-size:14px}.published-article td,.published-article th{border:1px solid var(--line);padding:10px 15px}.article-media{width:100%;background:#173c35;max-height:75vh;object-fit:contain}.article-return{margin-top:55px;padding-top:25px;border-top:1px solid var(--line)}
@media(min-width:1500px){.hero{min-height:755px;padding-block:100px 110px}.hero h1{font-size:80px}}
@media(max-width:1000px){.shell,.header-inner,.site-footer{width:calc(100% - 64px)}.hero{gap:35px;grid-template-columns:1fr 1fr;padding-block:65px 80px}.hero h1{font-size:52px}.delta-symbol{width:270px;height:270px;top:113px}.feedback-orbit{width:294px;height:294px;top:101px}.vertex-left{left:calc(50% - 125px);top:366px}.vertex-right{left:calc(50% + 125px);top:366px}.delta-center{top:254px}.field-foot{bottom:19px}.intro-section,.practice-section,.ai-grid,.about-teaser{gap:48px}.core-row{grid-template-columns:45px 95px 1fr 22px}.reading-layout{grid-template-columns:175px minmax(0,1fr);gap:45px}.about-page{grid-template-columns:200px minmax(0,1fr);gap:45px}.site-header nav{gap:24px}}
@media(max-width:760px){html{scroll-padding-top:92px}.shell,.header-inner,.site-footer{width:calc(100% - 40px)}.header-inner{min-height:76px;gap:0;flex-wrap:wrap}.brand img{width:166px}.site-header nav{width:100%;justify-content:space-between;gap:10px;font-size:11px;padding-bottom:16px}html.js .menu-toggle{display:block}html.js .site-header nav{display:none;position:absolute;top:76px;left:0;right:0;width:auto;padding:18px 20px 24px;background:#102a25;border-bottom:1px solid #bad7c32c;box-shadow:0 14px 20px #00000020}html.js .site-header nav.is-open{display:flex;flex-direction:column;align-items:stretch;gap:10px}html.js .site-header nav a{font-size:14px;padding:10px}.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}.hero{grid-template-columns:1fr;gap:46px;padding-block:47px 60px;min-height:0}.hero-copy{max-width:520px}.hero h1{font-size:clamp(43px,11vw,62px)}.hero .eyebrow{margin-bottom:22px}.tagline{font-size:11px;margin-top:19px}.hero-intro{font-size:14px;line-height:1.95;margin-top:27px;max-width:440px}.hero-note{font-size:12px}.hero-actions{margin-top:28px;gap:24px}.button{font-size:12px;min-height:48px;padding:11px 20px;gap:23px}.text-link{font-size:11px}.delta-field{height:440px;max-width:470px;margin:0 auto}.delta-symbol{width:280px;height:280px;top:108px}.feedback-orbit{width:304px;height:304px;top:96px}.vertex-left{left:calc(50% - 124px);top:365px}.vertex-right{left:calc(50% + 124px);top:365px}.vertex strong{font-size:19px}.vertex span{font-size:9px}.delta-center{top:253px;font-size:11px}.field-foot{bottom:0;font-size:9px}.section{padding-block:58px}.section-heading .eyebrow{margin-bottom:15px}h2{font-size:30px}.intro-section,.practice-section,.ai-grid,.about-teaser{grid-template-columns:1fr;gap:32px}.intro-prose .large-copy{font-size:26px}.intro-prose p{font-size:14px}.section-heading.horizontal{display:block;margin-bottom:30px}.section-heading.horizontal .heading-note{margin-top:20px}.section-heading.horizontal>.inline-link{margin-top:20px}.core-row{grid-template-columns:30px 64px 1fr;gap:14px;padding:26px 0}.core-row h3{font-size:24px}.core-row h4{font-size:13px;line-height:1.7}.core-row p{font-size:12px;line-height:1.9}.row-arrow{display:none}.row-number{font-size:9px}.feedback-line{gap:11px;font-size:10px}.feedback-line p{width:100%;margin:10px 0 0;font-size:11px}.practice-intro{font-size:14px}.practice-list h3{font-size:18px}.practice-list p:not(.practice-intro){font-size:13px}.ai-section{padding-block:58px}.ai-prose p{font-size:14px}.topic-grid{grid-template-columns:1fr}.topic-grid a,.topic-grid a+a{padding:26px 0;border-left:0}.topic-grid a+a{border-top:1px solid var(--line)}.topic-grid h3{font-size:24px;margin:12px 0}.topic-grid p{font-size:12px}.about-teaser>div p{font-size:14px}.footer-top{flex-wrap:wrap;gap:20px;padding-bottom:25px}.footer-top p{width:100%;order:3;font-size:11px}.back-top{font-size:10px}.footer-bottom{align-items:flex-start;flex-direction:column;gap:14px}.footer-bottom nav{gap:12px 20px;font-size:9px}.site-footer{padding-top:35px}.page-hero{padding-block:48px 50px}.page-hero h1{font-size:clamp(33px,8vw,45px)}.page-lead{font-size:14px;margin-top:24px}.reading-layout{grid-template-columns:1fr;gap:38px;padding-block:40px 60px}.reading-nav{position:static;flex-direction:row;flex-wrap:wrap;gap:6px 19px;font-size:11px;border-bottom:1px solid var(--line);padding-bottom:20px}.reading-nav>span{width:100%;border:0;padding:0;margin:0 0 10px}.prose p{font-size:14px;line-height:2}.prose h2{font-size:26px}.prose blockquote{font-size:21px;padding-left:18px}.article-prose section+section{margin-top:38px;padding-top:30px}.article-loop{padding:22px;gap:15px}.article-loop>span{font-size:18px}.article-loop p{font-size:10px}.about-page{grid-template-columns:1fr;gap:40px;padding-block:45px 60px}.about-profile{display:grid;grid-template-columns:100px 1fr;gap:0 25px;padding-top:25px}.about-profile img{width:90px;grid-row:1/4;margin:0}.about-profile h2{font-size:26px}.about-profile p{margin:8px 0 15px;font-size:12px}.about-profile>span{grid-column:2}.prose .large-copy{font-size:26px}.about-page article>h2{font-size:25px}.library-intro{display:block;padding-bottom:26px}.library-intro h2{font-size:25px}.library-intro a{margin-top:20px}.library-controls{gap:14px}.filter-group button{padding:7px 11px;font-size:11px}.media-filters button{font-size:10px}.library-empty{font-size:14px;padding-block:50px}.published-article{padding-block:45px 60px}.content-entry h3{font-size:21px}}
@media(max-width:360px){.hero-actions{gap:15px}.delta-symbol{width:244px;height:244px;top:113px}.feedback-orbit{width:264px;height:264px;top:103px}.vertex-left{left:calc(50% - 108px);top:337px}.vertex-right{left:calc(50% + 108px);top:337px}.delta-center{top:241px;font-size:10px}.delta-field{height:408px}.vertex span{font-size:9px}.core-row{grid-template-columns:24px 56px 1fr;gap:10px}.filter-group{gap:2px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}.feedback-orbit circle{display:none}}

.keep-words{white-space:nowrap}