:root{--ink:#16151a;--ink-mid:#3a3843;--ink-soft:#6a6774;--ink-faint:#97949e;--rule:#e6e4e9;--rule-soft:#f0eef2;--paper:#ffffff;--wash:#faf9fb;--accent:#6b5cd6;--band:#f4f3f1;--bad:#c8503f;--bad-wash:#fdf1ef;--good:#2f7a5a;--good-wash:#eef7f2;--serif:"Songti SC","Noto Serif SC","Source Han Serif SC","lxgw-wenkai-screen",Georgia,"Times New Roman",serif;--sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;--mono:"SF Mono",ui-monospace,Menlo,Consolas,monospace;--col:720px;--page:1640px;--nav-w:160px}*{box-sizing:border-box}html{-webkit-font-smoothing:antialiased}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.72;letter-spacing:.01em}a{color:inherit;text-decoration:none}.topbar{position:-webkit-sticky;position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(1.6) blur(12px);-webkit-backdrop-filter:saturate(1.6) blur(12px);border-bottom:1px solid var(--rule-soft)}.topbar__inner{max-width:var(--page);margin:0 auto;padding:0 40px;height:60px;justify-content:space-between}.topbar__inner,.wordmark{display:flex;align-items:center}.wordmark__img{height:22px;width:auto;display:block}.topnav{display:none}.topnav a:hover,.topnav a[aria-current]{color:var(--ink)}.lang-toggle{flex:none;margin-left:auto;margin-right:12px;height:30px;border:1px solid var(--rule);background:var(--wash);padding:2px;font-size:12px;font-weight:600;letter-spacing:.02em;-webkit-user-select:none;-moz-user-select:none;user-select:none}.lang-toggle,.lang-toggle__opt{position:relative;display:inline-flex;align-items:center;border-radius:999px}.lang-toggle__opt{z-index:1;justify-content:center;min-width:30px;height:24px;padding:0 7px;color:var(--ink-faint);transition:color .16s ease,background .16s ease}.lang-toggle__opt:hover{color:var(--ink-mid)}.lang-toggle__opt[aria-current=true]{color:var(--ink);background:var(--paper);box-shadow:0 1px 3px rgba(20,18,30,.1)}.creator-profile{position:relative;flex:none;color:var(--ink)}.creator-profile__trigger{display:flex;align-items:center;gap:9px;min-height:44px;padding:4px 7px 4px 4px;border-radius:10px;cursor:pointer;list-style:none;transition:background .16s ease}.creator-profile__trigger::-webkit-details-marker{display:none}.creator-profile__trigger:focus-visible,.creator-profile__trigger:hover{background:var(--wash)}.creator-profile__trigger:focus-visible{outline:2px solid color-mix(in srgb,var(--accent) 45%,transparent);outline-offset:2px}.creator-profile__avatar,.creator-profile__intro img{display:block;flex:none;width:36px;height:36px;object-fit:cover;object-position:center;border:1px solid rgba(22,21,26,.12);background:#f7f5ef}.creator-profile__avatar{border-radius:9px}.creator-profile__name{font-size:14px;font-weight:600;white-space:nowrap}.creator-profile__chevron{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;color:var(--ink-faint);transition:transform .16s ease}.creator-profile[open] .creator-profile__chevron{transform:rotate(180deg)}.creator-profile__panel{display:block;position:absolute;top:calc(100% + 8px);right:0;width:286px;padding:10px;border:1px solid var(--rule);border-radius:14px;background:rgba(255,255,255,.98);box-shadow:0 18px 48px rgba(20,18,30,.13),0 2px 8px rgba(20,18,30,.05);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-5px);transition:opacity .16s ease,transform .16s ease,visibility .16s}.creator-profile__panel:before{content:"";position:absolute;left:0;right:0;bottom:100%;height:10px}.creator-profile:hover .creator-profile__panel,.creator-profile[open] .creator-profile__panel{opacity:1;visibility:visible;pointer-events:auto;transform:none}.creator-profile__intro{display:flex;align-items:center;gap:12px;padding:6px 7px 13px;border-bottom:1px solid var(--rule-soft)}.creator-profile__intro img{border-radius:12px;width:48px;height:48px}.creator-profile__intro span,.creator-profile__platform-copy{display:flex;flex-direction:column;min-width:0}.creator-profile__intro strong{font-size:15px;line-height:1.4}.creator-profile__intro small,.creator-profile__platform-copy small{color:var(--ink-faint);font-size:11.5px;line-height:1.5}.creator-profile__links{display:grid;grid-gap:2px;gap:2px;padding-top:7px}.creator-profile__link{display:grid;grid-template-columns:30px minmax(0,1fr) auto;align-items:center;grid-gap:10px;gap:10px;padding:8px 7px;border-radius:9px;transition:background .14s ease,transform .14s ease}.creator-profile__link:hover{background:#f7f4ed;transform:translateX(2px)}.creator-profile__link:focus-visible{background:#f7f4ed;transform:translateX(2px);outline:2px solid color-mix(in srgb,var(--accent) 45%,transparent);outline-offset:-2px}.creator-profile__platform-icon{display:grid;place-items:center;width:30px;height:30px;border:1px solid var(--rule);border-radius:8px;background:#fff;font-family:var(--serif);font-size:13px;font-weight:700}.creator-profile__platform-copy strong{font-size:13px;line-height:1.35}.creator-profile__arrow{color:var(--ink-faint);font-size:12px}.hero{max-width:var(--page);margin:0 auto;padding:72px 40px 56px;display:grid;grid-template-columns:minmax(0,1fr) 620px;grid-gap:48px;gap:48px;align-items:center}.hero h1{font-size:36px;line-height:1.5;font-weight:400;letter-spacing:.01em;max-width:16em}.hero h1,.hero__kicker{font-family:var(--serif);margin:0 0 22px}.hero__kicker{font-size:19px;letter-spacing:.02em;color:var(--ink-soft);display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}.hero__kicker span{font-family:var(--sans);font-size:13px;color:var(--ink-faint);padding-left:14px;border-left:1px solid var(--rule)}.hero__lead{font-size:17px;line-height:1.9;color:var(--ink-mid);max-width:34em;margin:0}.hero__art{padding:0}.hero__art svg{width:100%;height:auto;display:block}.reel .ar1,.reel .ar2,.reel .pin,.reel .st1,.reel .st2,.reel .st3{animation-duration:7.5s;animation-iteration-count:infinite;animation-timing-function:cubic-bezier(.22,.68,.3,1);animation-delay:var(--d,0s);opacity:0}.reel .st1{animation-name:reel-1}.reel .ar1{animation-name:reel-a1}.reel .st2{animation-name:reel-2}.reel .ar2{animation-name:reel-a2}.reel .st3{animation-name:reel-3}.reel .pin{animation-name:reel-pin;animation-timing-function:cubic-bezier(.6,0,.2,1)}@keyframes reel-1{0%,1.5%{opacity:0;transform:translateY(7px)}7%,90%{opacity:1;transform:none}95%,to{opacity:0;transform:translateY(-5px)}}@keyframes reel-a1{0%,16%{opacity:0}22%,90%{opacity:1}95%,to{opacity:0}}@keyframes reel-a2{0%,38%{opacity:0}44%,90%{opacity:1}95%,to{opacity:0}}@keyframes reel-2{0%,22%{opacity:0;transform:translateY(7px)}28%,90%{opacity:1;transform:none}95%,to{opacity:0;transform:translateY(-5px)}}@keyframes reel-3{0%,44%{opacity:0;transform:translateY(7px)}50%,90%{opacity:1;transform:none}95%,to{opacity:0;transform:translateY(-5px)}}@keyframes reel-pin{0%,3%{opacity:0;transform:none}20%,7%{opacity:1;transform:none}26%,41%{opacity:1;transform:translateX(175px)}48%,90%{opacity:1;transform:translateX(350px)}95%,to{opacity:0;transform:translateX(350px)}}.reel .flow{stroke-dasharray:4 4;animation:reel-flow 1s linear infinite}@keyframes reel-flow{to{stroke-dashoffset:-16}}@media (prefers-reduced-motion:reduce){.reel,.reel *{animation:none!important;opacity:1!important;transform:none!important}}.index{max-width:var(--page);margin:0 auto;padding:0 40px 120px;display:grid;grid-template-columns:var(--nav-w) 1fr;grid-gap:0;gap:0;border-top:1px solid var(--rule-soft)}.catnav{padding-top:40px}.catnav__list{position:-webkit-sticky;position:sticky;top:96px;display:flex;flex-direction:column;gap:14px}.catnav a{font-size:15px;color:var(--ink-faint);display:flex;align-items:center;gap:10px;transition:color .15s}.catnav svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.catnav a:hover{color:var(--ink-mid)}.catnav a.is-active{color:var(--ink);font-weight:600}.catnav__group{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--ink-faint);text-transform:uppercase;display:flex;align-items:center;gap:10px;margin-top:8px}.catnav__group:first-child{margin-top:0}.catnav__group:after{content:"";flex:1 1;height:1px;background:var(--rule-soft)}.cats{border-left:1px solid var(--rule-soft)}.deck__head{padding:44px 0 0 44px}.deck:first-child .deck__head{padding-top:40px}.deck__name{font-size:26px;font-weight:700;letter-spacing:-.01em;margin:0 0 6px}.deck__desc{font-size:15.5px;line-height:1.7;color:var(--ink-soft);margin:0;max-width:60ch}.deck__head+.cat{padding-top:30px}.cat{padding:40px 0 44px 44px;border-bottom:1px solid var(--rule-soft)}.deck:last-child .cat:last-child{border-bottom:0}.cat__head{margin-bottom:26px}.cat__name{font-size:19px;font-weight:600;margin:0 0 2px}.cat__desc{font-size:15px;color:var(--ink-soft);margin:0}.cards{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:24px;gap:24px}.card{position:relative;display:block;background:#fff;padding:8px;border:1px solid var(--rule);border-radius:12px;transition:border-color .16s,transform .16s,box-shadow .16s}.card:hover{border-color:#cfcdd4;transform:translateY(-2px);box-shadow:0 8px 24px rgba(20,18,30,.07)}.card__art{height:300px;overflow:hidden;place-items:center;padding:12px 10px;border-radius:9px;background:var(--g,linear-gradient(155deg,#f1efec 0,#f8f7f5 48%,#fdfcfb 100%))}.card__art,.card__stage{position:relative;display:grid}.card__stage{width:100%;height:100%;place-items:center;padding:6px;overflow:hidden}.card__hero{width:100%;height:100%;padding:0}.card__hero svg{width:100%;height:100%;display:block}.card__cover{display:block;color:rgba(22,21,26,.7);padding:0;width:100%}.card__cover svg{width:100%;height:100%;max-height:280px;display:block}.card:hover .card__cover{color:rgba(22,21,26,.88)}.card__no{position:absolute;top:20px;right:24px;z-index:2;font-family:var(--serif);font-size:13.5px;color:rgba(22,21,26,.3)}.card__body{display:block;padding:22px 22px 20px}.card__name{font-size:19px;font-weight:700;letter-spacing:.01em;margin:0 0 10px}.card__desc{font-size:16px;line-height:1.65;color:var(--ink-mid);margin:0}.card__demo{position:absolute;bottom:14px;left:14px;z-index:2;display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:600;letter-spacing:.02em;color:var(--ink-mid);background:rgba(255,255,255,.86);border:1px solid var(--rule);border-radius:999px;padding:3px 9px 3px 7px;backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px)}.card__demo:before{content:"";width:0;height:0;border-left:5px solid;border-top:3.5px solid transparent;border-bottom:3.5px solid transparent}.card:hover .card__demo{color:var(--ink);border-color:var(--ink-faint)}.card--soon{border-style:dashed}.card--soon .card__art{opacity:.68}.card--soon .card__name{color:var(--ink-mid);font-weight:600}.card--soon .card__desc{color:var(--ink-soft)}.card--soon:hover{transform:none;box-shadow:none;border-color:var(--rule)}.step{display:flex;align-items:baseline;gap:12px;margin:30px 0 14px}.step:first-of-type{margin-top:4px}.step__chip{width:12px;height:12px;border-radius:50%;background:var(--gc,#eceaea);flex:none}.step__n{font-family:var(--serif);font-size:14px;color:var(--ink-faint);min-width:14px}.step__t{font-size:14px;font-weight:600;color:var(--ink-mid);letter-spacing:.04em}.step__d{font-size:13.5px;color:var(--ink-faint)}.step__rule{flex:1 1;height:1px;background:var(--rule-soft)}.foot{border-top:1px solid var(--rule-soft);padding:34px 40px 60px;font-size:14px;color:var(--ink-faint);max-width:var(--page);margin:0 auto;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.foot a:hover{color:var(--ink-mid)}@media (max-width:1080px){.cards{grid-template-columns:1fr}.card__art{height:250px}.hero{grid-template-columns:1fr;gap:40px;text-align:center}.hero h1{max-width:none}.hero__kicker{justify-content:center}.hero__art,.hero__lead{margin:0 auto}.hero__art{max-width:560px;width:100%}}@media (max-width:860px){body{font-size:16px}.hero h1{max-width:none;white-space:normal;font-size:26px}.foot,.index,.topbar__inner{padding-left:22px;padding-right:22px}.creator-profile{margin-left:auto}.creator-profile__chevron,.creator-profile__name{display:none}.creator-profile__trigger{padding-right:4px}.creator-profile__panel{width:min(286px,calc(100vw - 32px))}.hero{padding:56px 22px 44px}.hero h1{font-size:34px}.index{grid-template-columns:1fr}.catnav{display:none}.cats{border-left:0}.cat,.deck__head{padding-left:0}.deck__name{font-size:22px}.cards{grid-template-columns:1fr}}#ai-basics .cards{--g:var(--g-ai-basics)}#ai-model .cards{--g:var(--g-ai-model)}#ai-prompt .cards{--g:var(--g-ai-prompt)}#ai-context .cards{--g:var(--g-ai-context)}#ai-agent .cards{--g:var(--g-ai-agent)}#ai-cost .cards{--g:var(--g-ai-cost)}#basics .cards{--g:var(--g-basics)}#faxian .cards{--g:var(--g-faxian)}#dingyi .cards{--g:var(--g-dingyi)}#jiegou .cards{--g:var(--g-jiegou)}#jiaohu .cards{--g:var(--g-jiaohu)}#jiemian .cards{--g:var(--g-jiemian)}#xiezuo .cards{--g:var(--g-xiezuo)}#yanzheng .cards{--g:var(--g-yanzheng)}#ai-basics{--gc:#a7ded8}#ai-model{--gc:#7fd1d8}#ai-prompt{--gc:#86cbe6}#ai-context{--gc:#93c5f0}#ai-agent{--gc:#a9b0ee}#ai-cost{--gc:#e2b0d8}#basics{--gc:#f8d98a}#faxian{--gc:#a9d8e6}#dingyi{--gc:#f6c9a0}#jiegou{--gc:#b9c8ee}#jiaohu{--gc:#cdbce9}#jiemian{--gc:#f2b8c0}#xiezuo{--gc:#a5d8c6}#yanzheng{--gc:#c6d9a3}:root{--g-basics:radial-gradient(120% 130% at 6% 0%,#f8d98a 0%,#fdedc4 38%,#fffdf6 100%);--g-faxian:radial-gradient(120% 130% at 6% 0%,#a9d8e6 0%,#daeef4 38%,#f7fdfe 100%);--g-dingyi:radial-gradient(120% 130% at 6% 0%,#f6c9a0 0%,#fbe4cf 38%,#fffaf6 100%);--g-jiegou:radial-gradient(120% 130% at 6% 0%,#b9c8ee 0%,#dee5f7 38%,#f8faff 100%);--g-jiaohu:radial-gradient(120% 130% at 6% 0%,#cdbce9 0%,#e6dcf5 38%,#fbf9ff 100%);--g-jiemian:radial-gradient(120% 130% at 6% 0%,#f2b8c0 0%,#fadde1 38%,#fff9fa 100%);--g-xiezuo:radial-gradient(120% 130% at 6% 0%,#a5d8c6 0%,#d7ede4 38%,#f7fdfb 100%);--g-yanzheng:radial-gradient(120% 130% at 6% 0%,#c6d9a3 0%,#e4eecd 38%,#fbfdf4 100%);--g-ai-basics:radial-gradient(120% 130% at 6% 0%,#a7ded8 0%,#d9f1ee 38%,#f7fdfc 100%);--g-ai-model:radial-gradient(120% 130% at 6% 0%,#7fd1d8 0%,#cfeef1 38%,#f5fdfd 100%);--g-ai-prompt:radial-gradient(120% 130% at 6% 0%,#86cbe6 0%,#d1e9f4 38%,#f6fcfe 100%);--g-ai-context:radial-gradient(120% 130% at 6% 0%,#93c5f0 0%,#d3e6f9 38%,#f7fbff 100%);--g-ai-agent:radial-gradient(120% 130% at 6% 0%,#a9b0ee 0%,#dcdff8 38%,#f9f9ff 100%);--g-ai-cost:radial-gradient(120% 130% at 6% 0%,#e2b0d8 0%,#f3dcee 38%,#fdf8fc 100%)}.card__cover svg{width:80%;height:auto;max-width:320px}.crumb{max-width:var(--page);margin:0 auto;padding:22px 40px;font-size:14.5px;color:var(--ink-soft)}.crumb a:hover{color:var(--ink)}.crumb span{margin:0 6px}.crumb .crumb__here,.crumb span{color:var(--ink-faint)}.stage{max-width:var(--page);margin:0 auto;padding:0 40px}.stage__inner{background:var(--band);border-radius:12px;padding:44px 32px;display:grid;place-items:center;min-height:320px}.stage__cap{margin:0 auto;padding:16px 40px 0;font-size:14px;color:var(--ink-soft);text-align:center}.doc,.stage__cap{max-width:var(--page)}.doc{margin:56px auto 0;padding:56px 40px 140px;position:relative;border-top:1px solid var(--rule-soft)}.doc .secnav{position:absolute;left:40px;top:56px;width:var(--nav-w)}.secnav__list{position:-webkit-sticky;position:sticky;top:96px;display:flex;flex-direction:column;gap:12px;padding-top:8px}.secnav a{font-size:15px;color:var(--ink-faint);transition:color .15s}.secnav a:hover{color:var(--ink-mid)}.secnav a.is-active{color:var(--ink);font-weight:600}.prose{max-width:var(--col);margin:0 auto}.prose h1{font-family:var(--serif);font-weight:400;font-size:40px;line-height:1.45;letter-spacing:.01em;margin:0 0 28px}.prose h2{font-size:15px;font-weight:600;letter-spacing:.09em;color:var(--ink-faint);text-transform:none;margin:68px 0 22px;padding-bottom:12px;border-bottom:1px solid var(--rule-soft)}.prose h3{font-size:17px;font-weight:600;margin:34px 0 10px}.prose p{margin:0 0 20px;color:var(--ink-mid)}.prose>p:first-of-type{color:var(--ink);font-size:18px}.prose strong{color:var(--ink);font-weight:600}.prose ul{margin:0 0 20px;padding-left:20px}.prose li{margin-bottom:10px;color:var(--ink-mid)}.prose a{color:var(--accent)}.prose a:hover{text-decoration:underline}.prose code{font-family:var(--mono);font-size:14px;background:var(--wash);padding:2px 6px;border-radius:4px}.prose pre{background:var(--wash);padding:18px 20px;border-radius:8px;overflow-x:auto}.prose pre code{background:transparent;padding:0}.prose blockquote{border-left:3px solid var(--rule);padding-left:16px;color:var(--ink-soft);margin:20px 0}.prose hr{border:0;border-top:1px solid var(--rule-soft);margin:40px 0}.lede{font-size:21px;line-height:1.7;color:var(--ink);margin:0 0 26px;font-weight:500}.symptoms{border-top:1px solid var(--rule-soft);border-bottom:1px solid var(--rule-soft);padding:20px 0 22px;margin:0 0 34px}.symptoms__label{font-size:12.5px;letter-spacing:.1em;color:var(--ink-faint);margin-bottom:14px}.symptoms ul{list-style:none;padding:0;margin:0}.symptoms li{display:flex;gap:11px;align-items:flex-start;font-size:15.5px;line-height:1.65;color:var(--ink-mid);margin-bottom:9px}.symptoms li:last-child{margin-bottom:0}.symptoms li:before{content:"";flex:none;width:5px;height:5px;margin-top:9px;border-radius:50%;background:var(--ink-faint)}.figure{margin:34px 0 30px}.figure svg{width:100%;height:auto;display:block}.figure figcaption{font-size:14px;color:var(--ink-soft);line-height:1.75;margin-top:14px}.figure--boxed{border:1px solid var(--rule-soft);border-radius:8px;padding:26px 24px 22px}.figure--boxed figcaption{margin-top:16px}.considerations{list-style:none;padding:0;margin:0}.considerations li{padding:0;margin:0 0 30px}.considerations li:last-child{margin-bottom:0}.considerations b{display:block;color:var(--ink);font-weight:600;margin-bottom:4px}.tbl{width:100%;border-collapse:collapse;font-size:14.5px;line-height:1.72}.tbl th{text-align:left;font-weight:600;font-size:13px;color:var(--ink-soft);letter-spacing:.02em;padding:11px 16px;background:#f7f6f9;border-bottom:1px solid var(--rule)}.tbl th:first-child{border-radius:6px 0 0 0}.tbl th:last-child{border-radius:0 6px 0 0}.tbl td{padding:14px 16px;vertical-align:top;color:var(--ink-mid);border-bottom:1px solid var(--rule-soft)}.tbl tr:last-child td{border-bottom:0}.tbl tbody tr:hover td,.tbl tr:hover td{background:#fafafb}.tbl td:first-child{color:var(--ink)}.tbl .ui-tag{font-size:12px;padding:3px 10px}.figure--boxed:has(.tbl){padding:0;overflow:hidden}.figure--boxed:has(.tbl) figcaption{padding:0 24px 20px;margin-top:16px}.related{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:18px;gap:18px}.related__item{display:block;min-width:0;overflow:hidden;background:#fff;border:1px solid var(--rule);border-radius:12px;transition:border-color .16s,transform .16s,box-shadow .16s}a.related__item:hover{border-color:#cfcdd4;transform:translateY(-2px);box-shadow:0 8px 24px rgba(20,18,30,.07)}.related__art{display:block;height:150px;padding:10px;overflow:hidden;background:linear-gradient(155deg,#f1efec,#f8f7f5 52%,#fdfcfb);border-bottom:1px solid var(--rule-soft)}.related__name{font-weight:600;margin:0;padding:16px 18px 4px}.related__name:after{content:" ↗";color:var(--ink-faint);font-size:13px}.related__why{font-size:14.5px;color:var(--ink-mid);line-height:1.65;padding:0 18px 18px}.related__item:hover .related__name{color:var(--accent)}.related__item--soon{padding:0 0 14px;border-style:dashed;background:var(--wash)}.related__item--soon .related__name{color:var(--ink-soft);font-weight:500;padding-top:18px}.related__item--soon .related__name:after{content:" 待写";font-size:12px;color:var(--ink-faint)}.examples{display:flex;flex-direction:column;gap:26px}.example__shot{border:1px solid var(--rule);border-radius:8px;background:var(--wash);padding:22px;margin-bottom:10px}.example__cap{font-size:15px;color:var(--ink-soft);line-height:1.68}.spec{position:relative;border:1px solid var(--rule);border-radius:8px;background:var(--wash);padding:20px 22px 22px;margin:0 0 18px}.spec__label{font-size:12px;letter-spacing:.08em;color:var(--ink-faint);margin-bottom:12px}.spec pre,.spec__label{font-family:var(--mono)}.spec pre{margin:0;font-size:13.5px;line-height:1.75;color:var(--ink-mid);white-space:pre-wrap;word-break:break-word}.spec__copy{position:absolute;top:14px;right:14px;border:1px solid var(--rule);background:#fff;border-radius:5px;font-family:var(--sans);font-size:12.5px;color:var(--ink-soft);padding:4px 10px;cursor:pointer}.spec__copy:hover{color:var(--ink);border-color:var(--ink-faint)}@media (max-width:1180px){.doc .secnav{display:none}}@media (max-width:860px){.crumb,.doc,.stage{padding-left:22px;padding-right:22px}.doc{padding-top:32px}.doc .secnav{display:none}.stage__inner{padding:24px 16px;min-height:0}.prose h1{font-size:32px}.related{grid-template-columns:1fr}}body[data-cat=basics] .stage__inner{background:var(--g-basics)}body[data-cat=faxian] .stage__inner{background:var(--g-faxian)}body[data-cat=dingyi] .stage__inner{background:var(--g-dingyi)}body[data-cat=jiegou] .stage__inner{background:var(--g-jiegou)}body[data-cat=jiaohu] .stage__inner{background:var(--g-jiaohu)}body[data-cat=jiemian] .stage__inner{background:var(--g-jiemian)}body[data-cat=xiezuo] .stage__inner{background:var(--g-xiezuo)}body[data-cat=yanzheng] .stage__inner{background:var(--g-yanzheng)}body[data-cat=ai-basics] .stage__inner{background:var(--g-ai-basics)}body[data-cat=ai-model] .stage__inner{background:var(--g-ai-model)}body[data-cat=ai-prompt] .stage__inner{background:var(--g-ai-prompt)}body[data-cat=ai-context] .stage__inner{background:var(--g-ai-context)}body[data-cat=ai-agent] .stage__inner{background:var(--g-ai-agent)}body[data-cat=ai-cost] .stage__inner{background:var(--g-ai-cost)}