:root{--bg:#F6F4EE;--card:#fff;--soft:#ECEFE8;--sand:#F2E7D7;--green:#21463B;--deep:#17352D;--mid:#3C685A;--orange:#C56B3D;--gold:#C6A15B;--title:#1F2D28;--text:#3E4A45;--muted:#66716C;--hint:#78817D;--line:#D9DED8;--footer:#183129;--foottext:#F4F3ED;--shadow:0 8px 24px rgba(31,45,40,.06)}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8;overflow-wrap:break-word}a{color:var(--green);text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:var(--orange)}a:focus-visible,button:focus-visible{outline:3px solid var(--gold);outline-offset:3px}img{display:block;max-width:100%;height:auto;object-fit:contain}.wrap{width:min(100% - 64px,1180px);margin-inline:auto;min-width:0}.site-header{background:rgba(246,244,238,.98);border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{height:70px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:10px;min-width:0;text-decoration:none;color:var(--title);font-weight:750;white-space:nowrap}.brand-logo{height:32px;width:auto;max-width:165px}.brand-icon{height:32px;width:32px}.brand-name{font-size:17px}.desktop-nav{display:flex;align-items:center;gap:20px;margin-left:auto}.desktop-nav a,.header-actions a,.menu-toggle{font-size:15px;text-decoration:none;color:var(--text)}.desktop-nav a{padding:8px 0;border-bottom:2px solid transparent}.desktop-nav a.active{color:var(--green);border-color:var(--orange)}.header-actions{display:flex;align-items:center;gap:10px}.menu-toggle,.menu-close,.button-link{min-height:44px;border-radius:9px;border:1px solid var(--green);background:var(--green);color:#fff;padding:8px 14px;cursor:pointer;font:inherit}.mobile-link{padding:8px 4px}.mega-menu{background:#fff;border-bottom:1px solid var(--line)}.mega-inner{padding:24px 0 28px}.desktop-mega{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}.desktop-mega section{min-width:0}.desktop-mega h2,.mobile-mega h2{font-size:15px;margin:0 0 10px;color:var(--green)}.desktop-mega section>a{display:block;text-decoration:none;padding:5px 0;font-weight:650}.desktop-mega small{display:block;color:var(--muted);font-weight:400;font-size:14px;line-height:1.5}.service-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2px 12px}.service-links a{font-size:14px}.mobile-mega{display:none}main{min-width:0}.page-head{padding:38px 0 28px;border-bottom:1px solid var(--line)}.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:10px}.page-head h1,.hero h1{font-size:34px;line-height:1.25;color:var(--title);margin:0 0 12px}.page-head p{max-width:780px;margin:0;color:var(--muted)}.tag{display:inline-block;margin-bottom:10px;color:var(--orange);font-size:14px;font-weight:700}.section{padding:58px 0}.section.compact{padding:44px 0}.section.alt{background:var(--soft)}.section.sand{background:var(--sand)}h2{font-size:25px;line-height:1.35;color:var(--title);margin:0 0 16px}h3{font-size:19px;line-height:1.45;color:var(--title);margin:28px 0 8px}p{margin:0 0 16px}ul,ol{padding-left:1.3em}.prose{max-width:760px}.wide-prose{max-width:940px}.centered{margin-inline:auto}.lead{font-size:17px;color:#34433d}.text-link{font-weight:700}.soft-box{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:22px}.sand-box{background:var(--sand);border:1px solid #e3d5c2;border-radius:12px;padding:22px}.note-line{border-left:3px solid var(--orange);padding-left:18px}.content-image{margin:24px 0;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px;max-height:240px}.focus-image{margin:24px auto;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px;max-height:300px}.hero{padding:46px 0}.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:44px;align-items:center;min-height:330px}.hero-copy{min-width:0}.hero-copy p{max-width:650px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.button-link{display:inline-flex;align-items:center;text-decoration:none}.button-link.secondary{background:transparent;color:var(--green)}.hero-media{min-width:0;display:flex;justify-content:center}.hero-media img{max-width:430px;max-height:300px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px}.reading-lines{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,.8fr);gap:26px}.reading-main{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,.55fr);gap:24px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;min-width:0}.reading-main img{max-height:190px}.reading-side{display:grid;gap:18px}.reading-side article{border-top:3px solid var(--gold);padding-top:16px}.radar-home{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:38px;align-items:start}.purpose-list{display:grid;gap:8px}.purpose-list a{display:block;padding:10px 12px;border-bottom:1px solid var(--line);text-decoration:none}.radar-copy img{max-height:220px}.people-space{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:34px}.people-main img{max-height:240px}.space-aside{align-self:center}.space-aside img{max-height:170px;margin-top:18px}.essay-flow figure{margin:24px 0;max-width:420px}.essay-flow figure:nth-of-type(2){margin-left:auto}.ai-home{display:grid;grid-template-columns:minmax(260px,340px) minmax(0,1fr);gap:36px;align-items:start}.ai-home img{max-height:280px}.steps{max-width:820px;border-left:2px solid var(--gold);padding-left:28px}.steps article{position:relative;margin:0 0 24px}.steps article::before{content:"";position:absolute;left:-35px;top:.8em;width:12px;height:12px;border-radius:50%;background:var(--orange)}.steps img{max-height:200px}.topics-home{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,.65fr));gap:16px;align-items:start}.topic-lead{grid-row:span 2;background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}.topic-lead img{max-height:240px;margin:18px 0}.topic-short{border-top:3px solid var(--gold);padding-top:16px}.letter-home{display:grid;grid-template-columns:minmax(0,760px) minmax(220px,1fr);gap:30px;align-items:center}.letter-home img{max-height:220px}.continue-grid{display:grid;grid-template-columns:minmax(180px,240px) minmax(0,1fr);gap:34px;align-items:center}.continue-grid img{max-width:240px;max-height:380px}.text-strip{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}.index-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin:22px 0}.index-list a{padding:12px;border:1px solid var(--line);background:#fff;border-radius:9px;text-align:center;text-decoration:none}.two-track{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.track{border-top:3px solid var(--orange);padding-top:18px}.number-flow{display:grid;grid-template-columns:70px minmax(0,1fr);gap:18px;max-width:900px}.number-rail{color:var(--orange);font-weight:800;font-size:18px;border-right:1px solid var(--line)}.number-body{min-width:0}.number-body article{padding-bottom:22px;margin-bottom:22px;border-bottom:1px solid var(--line)}.people-blocks{display:grid;gap:26px;max-width:920px}.people-blocks section:nth-child(odd){max-width:760px}.people-blocks section:nth-child(even){max-width:820px;margin-left:auto}.with-aside{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:36px}.aside-index{position:sticky;top:20px;align-self:start;border-left:2px solid var(--gold);padding-left:18px}.aside-index a{display:block;margin:8px 0}.scene-list article{padding:22px 0;border-bottom:1px solid var(--line)}.scene-meta{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:12px}.scene-meta div{background:#fff;border:1px solid var(--line);border-radius:9px;padding:12px}.sound-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:34px}.sound-list{background:var(--sand);border:1px solid #e3d5c2;border-radius:12px;padding:18px}.process article{padding:18px 0;border-bottom:1px solid var(--line)}.quote-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,.55fr);gap:24px}.quote-box{background:var(--soft);border-left:3px solid var(--orange);padding:18px}.note-article{padding:36px 0;border-bottom:1px solid var(--line)}.note-article.narrow{max-width:680px;margin-inline:auto}.note-article.interleave img{max-width:420px;margin:22px auto}.topic-layout-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.vertical-items article{padding:18px 0;border-bottom:1px solid var(--line)}.archive-group{padding:22px 0;border-bottom:1px solid var(--line)}.archive-links{display:flex;flex-wrap:wrap;gap:10px 18px}.beginner-step{display:grid;grid-template-columns:54px minmax(0,1fr);gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}.step-no{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--green);color:#fff;font-weight:800}.mobile-product{display:grid;grid-template-columns:220px minmax(0,1fr);gap:40px;align-items:start}.mobile-product img{max-width:240px;max-height:380px}.qa-flow article{padding:20px 0;border-bottom:1px solid var(--line)}.policy section{padding:18px 0;border-bottom:1px solid var(--line)}.faq-list article{padding:0 0 24px;margin-bottom:24px;border-bottom:1px solid var(--line)}.faq-list h2{font-size:20px;margin-bottom:8px}.site-footer{background:var(--footer);color:var(--foottext);padding:44px 0 92px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:28px}.site-footer h2{font-size:17px;color:#fff;margin-bottom:10px}.site-footer a{display:block;color:#f3ead7;text-decoration:none;margin:5px 0}.site-footer p{color:#d9e0dc}.en-mark{letter-spacing:.08em;font-size:14px}.mobile-bottom{display:none}
@media(max-width:1023px){.wrap{width:min(100% - 44px,1180px)}.desktop-nav{gap:12px}.desktop-nav a{font-size:14px}.reading-lines,.people-space,.letter-home{grid-template-columns:minmax(0,1fr)}.topics-home{grid-template-columns:minmax(0,1.2fr) repeat(2,minmax(0,.8fr))}.topic-lead{grid-row:auto}.footer-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.footer-brand{grid-column:span 3}}
@media(max-width:767px){body{font-size:16px;line-height:1.8}.wrap{width:calc(100% - 32px)}.header-inner{height:60px;gap:10px}.brand-logo{height:27px;max-width:135px}.brand-icon{height:27px;width:27px}.brand-name{font-size:16px}.desktop-nav{display:none}.header-actions{margin-left:auto;gap:6px}.menu-toggle{padding:7px 10px;min-height:44px}.mobile-link{font-size:15px}.desktop-mega{display:none}.mobile-mega{display:block}.mobile-mega .menu-close{margin-bottom:16px}.mobile-mega section{padding:12px 0;border-top:1px solid var(--line)}.mobile-mega section>div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 12px}.mobile-mega a{padding:7px 0;text-decoration:none;min-width:0}.page-head{padding:28px 0 22px}.page-head h1,.hero h1{font-size:28px;line-height:1.35}.page-head p{font-size:16px}.section{padding:40px 0}.section.compact{padding:34px 0}h2{font-size:22px;line-height:1.42}h3{font-size:18px;line-height:1.5}.hero{padding:32px 0}.hero-grid,.reading-lines,.reading-main,.radar-home,.people-space,.ai-home,.topics-home,.letter-home,.continue-grid,.two-track,.with-aside,.sound-layout,.quote-grid,.topic-layout-2,.mobile-product{grid-template-columns:minmax(0,1fr);grid-template-rows:auto;grid-template-areas:none;gap:24px}.hero-grid>* ,.reading-lines>* ,.reading-main>* ,.radar-home>* ,.people-space>* ,.ai-home>* ,.topics-home>* ,.letter-home>* ,.continue-grid>* ,.two-track>* ,.with-aside>* ,.sound-layout>* ,.quote-grid>* ,.topic-layout-2>* ,.mobile-product>*{grid-column:auto!important;grid-row:auto!important;grid-area:auto!important;min-width:0}.hero-media img{max-height:220px;max-width:100%}.reading-main{padding:18px}.reading-main img,.content-image{max-height:200px}.people-main img{max-height:200px}.space-aside img{max-height:170px}.essay-flow figure{max-width:100%;margin:22px 0}.ai-home img{max-height:210px;max-width:100%}.steps{border-left:0;padding-left:0}.steps article{padding-left:0}.steps article::before{display:none}.steps article h3::before{content:"步骤 ";color:var(--orange);font-size:14px}.topics-home{display:grid}.topic-lead,.topic-short{grid-column:auto!important;grid-row:auto!important}.letter-home img{max-height:190px}.continue-grid img{max-width:190px;max-height:290px;margin-inline:auto}.index-list{grid-template-columns:minmax(0,1fr)}.number-flow{grid-template-columns:minmax(0,1fr);gap:0}.number-rail{border-right:0;border-bottom:1px solid var(--line);padding-bottom:8px;margin-bottom:8px}.people-blocks section,.people-blocks section:nth-child(even),.people-blocks section:nth-child(odd){max-width:100%;margin-left:0}.aside-index{position:static;border-left:0;border-top:2px solid var(--gold);padding:14px 0 0}.scene-meta{grid-template-columns:minmax(0,1fr)}.sound-list{order:2}.beginner-step{grid-template-columns:42px minmax(0,1fr)}.mobile-product img{max-width:190px;max-height:290px;margin-inline:auto}.footer-grid{grid-template-columns:minmax(0,1fr);gap:22px}.footer-brand{grid-column:auto}.site-footer{padding-bottom:104px}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:30;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));min-height:56px;padding-bottom:env(safe-area-inset-bottom);background:var(--deep);border-top:1px solid rgba(255,255,255,.16)}.mobile-bottom a{display:grid;place-items:center;min-height:56px;color:#fff;text-decoration:none;font-size:15px}.prose,.wide-prose{max-width:100%}article,section,aside,nav,figure,div{min-width:0}p,h1,h2,h3,li,blockquote{max-width:100%;white-space:normal}.text-strip{gap:8px 14px}}
@media(max-width:360px){.wrap{width:calc(100% - 28px)}.brand-name{font-size:15px}.brand-logo{max-width:118px}.header-actions{gap:2px}.menu-toggle{padding-inline:8px}.mobile-mega section>div{grid-template-columns:minmax(0,1fr)}.page-head h1,.hero h1{font-size:27px}.hero-actions{display:grid;grid-template-columns:minmax(0,1fr)}.button-link{justify-content:center}}