.ai-page{background:#fff;color:#18202b;--ai-copy:#535f6d;--ai-border:#e0e6ec;--ai-soft:#f7f9fb}
.ai-container{max-width:1250px;padding:0 34px;margin:auto}
.ai-intro{padding:72px 0 30px;background:radial-gradient(ellipse at 90% 0,#ffedef,transparent 55%),linear-gradient(180deg,#fff,#f8fafc);border-bottom:1px solid var(--ai-border)}
.ai-intro-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:70px;align-items:center}
.ai-intro h1{font-size:clamp(38px,4.7vw,62px);line-height:1.2;letter-spacing:-2px;margin:0 0 24px}
.ai-intro h1 span{color:var(--red)}
.ai-intro-lead{font-size:20px;line-height:1.8;color:#364354;margin:0 0 20px}
.ai-copy{font-size:15px;line-height:1.9;color:var(--ai-copy);margin:0 0 26px}
.ai-hero-diagram{border:1px solid var(--ai-border);background:#fff;border-radius:18px;padding:26px 30px;box-shadow:0 18px 40px #28344907}
.ai-diagram-label,.ai-small-label{font-size:11px;font-weight:750;color:#b2252d;letter-spacing:.7px}
.ai-hero-diagram blockquote{font-size:20px;font-weight:650;line-height:1.6;margin:14px 0 20px;color:#283649}
.ai-hero-diagram ol{padding:0;list-style:none;margin:0}
.ai-hero-diagram li{display:flex;gap:14px;align-items:center;position:relative;padding:12px 0}
.ai-hero-diagram li>span{flex-shrink:0;width:34px;height:34px;border-radius:10px;background:#fff0f1;color:#b2252d;font-size:11px;font-weight:750;display:grid;place-items:center}
.ai-hero-diagram li b{display:block;font-size:14px}.ai-hero-diagram li small{font-size:12px;color:var(--ai-copy)}
.ai-hero-diagram li:not(:last-child):after{content:"";position:absolute;left:16px;top:48px;bottom:-4px;width:1px;background:#edd9dc}
.ai-hero-diagram>p{font-size:11px;color:var(--ai-copy);padding-top:16px;border-top:1px solid var(--ai-border);margin-bottom:0}
.ai-page-index{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:12px;margin-top:40px}
.ai-page-index a{grid-column:span 3;position:relative;background:#fff;border:1px solid var(--ai-border);border-radius:12px;padding:20px;transition:box-shadow .2s,border-color .2s}
.ai-page-index a:nth-child(n+5){grid-column:span 4}
.ai-page-index a:hover{border-color:#d92f3670;box-shadow:0 7px 24px #15171a08}
.ai-page-index a>span{display:block;font-size:11px;color:#b2252d;font-weight:750;letter-spacing:.8px}
.ai-page-index strong{display:block;font-size:17px;line-height:1.5;margin:12px 0 8px;color:#18202b}
.ai-page-index small{display:block;font-size:12px;line-height:1.8;color:var(--ai-copy)}
.ai-page-index a>b{position:absolute;right:16px;top:17px;font-size:16px;color:#9b3940;font-weight:500}
.ai-reading-layout{display:grid;grid-template-columns:205px minmax(0,1fr);gap:36px;align-items:start;padding-top:40px}
.ai-sidebar{position:sticky;top:108px;max-height:calc(100vh - 128px);overflow-y:auto;scrollbar-width:thin}
.ai-page .ai-toc{display:block;justify-content:flex-start;align-items:stretch;padding:16px;background:#f7f8fa;border:1px solid var(--ai-border);border-radius:12px}
.ai-toc-label{margin:0 0 14px;font-size:11px;font-weight:750;color:#66707c;letter-spacing:.5px}
.ai-page .ai-toc a{display:flex;flex-direction:column;align-items:start;gap:4px;white-space:normal;padding:11px;margin:4px 0;border-radius:7px;line-height:1.5;box-shadow:none}
.ai-toc a>span{font-size:10px;color:#697482;letter-spacing:1px}
.ai-toc a>strong{font-size:13px;color:#414b57;font-weight:650}
.ai-page .ai-toc a:hover,.ai-page .ai-toc a[aria-current="location"]{background:#fff;box-shadow:0 2px 8px #17202a06}
.ai-toc a[aria-current="location"]>strong,.ai-toc a[aria-current="location"]>span{color:#b2252d}
.ai-top-link{display:block;padding:16px 20px;font-size:12px;color:#66707c}
.ai-content{min-width:0}
.ai-content>.ai-section:first-child{padding-top:0}
.ai-reading-layout .ai-agent-steps{grid-template-columns:repeat(2,minmax(0,1fr))}
.ai-reading-layout .ai-refinement,.ai-reading-layout .ai-example-grid{gap:26px;padding:28px}
.ai-reading-layout .ai-example-grid blockquote{font-size:22px}
.ai-intro{scroll-margin-top:4px}
@media(max-width:1100px){.ai-reading-layout{grid-template-columns:180px minmax(0,1fr);gap:26px}.ai-page-index{grid-template-columns:repeat(3,minmax(0,1fr))}.ai-page-index a,.ai-page-index a:nth-child(n+5){grid-column:auto}.ai-page-index a:last-child{grid-column:1 / -1}.ai-reading-layout .ai-foundation-grid{grid-template-columns:1fr}.ai-reading-layout .ai-responsibilities{grid-template-columns:1fr;gap:12px}.ai-reading-layout .ai-role-connector{transform:rotate(90deg)}.ai-reading-layout .ai-refinement,.ai-reading-layout .ai-example-grid{grid-template-columns:1fr}.ai-reading-layout .ai-use-cards,.ai-reading-layout .ai-audience-grid,.ai-reading-layout .ai-trust-grid{gap:16px}.ai-reading-layout .ai-lab-loop{gap:8px;padding-left:10px;padding-right:10px}.ai-reading-layout .ai-lab-loop li b{font-size:12px}.ai-reading-layout .ai-lab-loop li:not(:last-child):after{right:-10px}}
@media(max-width:850px){.ai-reading-layout{display:block;padding-top:24px}.ai-sidebar{position:static;max-height:none;overflow:visible;margin-bottom:30px}.ai-page .ai-toc{display:flex;flex-wrap:wrap;gap:8px;padding:12px}.ai-toc-label{flex-basis:100%;margin:0 0 3px}.ai-page .ai-toc a{flex-direction:row;align-items:center;gap:8px;padding:9px 10px;margin:0}.ai-top-link{display:none}.ai-reading-layout .ai-foundation-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.ai-reading-layout .ai-use-cards,.ai-reading-layout .ai-audience-grid,.ai-reading-layout .ai-trust-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.ai-page-index{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding-top:0;margin-top:30px}.ai-page-index a{padding:18px 16px}.ai-page-index strong{font-size:16px}.ai-page .ai-toc a>strong{font-size:12px}.ai-reading-layout .ai-foundation-grid,.ai-reading-layout .ai-use-cards,.ai-reading-layout .ai-audience-grid,.ai-reading-layout .ai-trust-grid,.ai-reading-layout .ai-agent-steps{grid-template-columns:1fr}.ai-reading-layout .ai-refinement,.ai-reading-layout .ai-example-grid{padding:24px}.ai-reading-layout .ai-lab-loop{grid-template-columns:1fr;gap:14px;padding:20px}.ai-reading-layout .ai-lab-loop li:not(:last-child):after{left:0;right:0}}
@media(prefers-reduced-motion:reduce){.ai-page-index a{transition:none}}
.ai-section{padding:64px 0;border-bottom:1px solid var(--ai-border);scroll-margin-top:4px}
.ai-section-head{max-width:850px;margin-bottom:30px}
.ai-section-head h2{font-size:clamp(30px,3vw,42px);letter-spacing:-1px;line-height:1.3;margin:0 0 18px}
.ai-section-head>p{font-size:16px;color:var(--ai-copy);line-height:1.85;margin:0}
.ai-prompt-board{padding:24px 28px;border:1px solid var(--ai-border);border-radius:14px;background:var(--ai-soft)}
.ai-prompt-grid{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}
.ai-prompt-grid blockquote{padding:12px 16px;border:1px solid #dde4ec;border-radius:9px;background:white;margin:0;font-size:14px;color:#364354;line-height:1.8}
.ai-use-cards,.ai-trust-grid,.ai-audience-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:24px}
.ai-use-cards article,.ai-trust-grid article,.ai-audience-grid article{padding:28px;border:1px solid var(--ai-border);border-radius:14px;background:#fff}
.ai-use-cards article>span{font-size:11px;font-weight:750;color:#b2252d}
.ai-page h3{font-size:21px;line-height:1.5;margin:12px 0}
.ai-use-cards p,.ai-trust-grid p,.ai-audience-grid p{font-size:14px;color:var(--ai-copy);line-height:1.9;margin:0}
.ai-key-line{font-size:17px;font-weight:700;padding:18px 20px;margin:24px 0 0;color:#9d2028;border-left:3px solid var(--red);background:#fff7f7;border-radius:0 8px 8px 0}
.ai-foundation-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.ai-foundation-grid article{border:1px solid var(--ai-border);border-radius:14px;padding:26px}
.ai-foundation-grid article>span{font-size:10px;letter-spacing:1.2px;font-weight:750;color:#b2252d}
.ai-bullets{padding:0;list-style:none;margin:16px 0 0}
.ai-bullets li{position:relative;padding-left:16px;font-size:14px;line-height:1.85;color:var(--ai-copy);margin:10px 0}
.ai-bullets li:before{content:"";position:absolute;left:0;top:11px;width:4px;height:4px;border-radius:50%;background:#a9b6c5}
.ai-responsibilities{display:grid;grid-template-columns:1fr 36px 1fr;gap:18px;align-items:center;padding:30px;background:var(--ai-soft);border-radius:14px;margin-top:24px}
.ai-role-label{font-size:11px;font-weight:750;color:#b2252d}.ai-role-connector{color:#b2252d;font-size:24px;text-align:center}
.ai-responsibilities p{font-size:14px;color:var(--ai-copy);line-height:1.9;margin:0}
.ai-formula{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:center;margin:26px 0 0}
.ai-formula span{font-size:13px;color:#364354;font-weight:650}.ai-formula b{font-size:14px;color:#b2252d;font-weight:500}
.ai-agent-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;list-style:none;padding:0;margin:0;counter-reset:step}
.ai-agent-steps li{border:1px solid var(--ai-border);border-radius:14px;padding:26px;background:#fff}
.ai-agent-steps li>span{display:grid;place-items:center;width:36px;height:36px;border-radius:9px;background:#fff0f1;color:#b2252d;font-size:12px;font-weight:750;margin-bottom:20px}
.ai-agent-steps p{font-size:14px;color:var(--ai-copy);line-height:1.85;margin:0}
.ai-refinement{display:grid;grid-template-columns:1fr 1.1fr;gap:44px;padding:32px;border:1px solid #ead9dd;border-radius:16px;background:linear-gradient(120deg,#fff6f7,#fff 60%)}
.ai-refinement-questions blockquote{font-size:17px;color:#344153;font-weight:650;line-height:1.75;padding-left:16px;border-left:2px solid #dc9298;margin:20px 0}
.ai-refinement-questions p{font-size:13px;color:var(--ai-copy);line-height:1.9}
.ai-refinement-note{border-top:1px solid var(--ai-border);padding-top:16px;margin:22px 0 0;font-size:13px;font-weight:650;color:#9d2028;line-height:1.85}
.ai-trust-grid{margin-top:0}.ai-trust-grid h3{margin-top:0}.ai-trust-grid .ai-trust-emphasis{font-weight:700;color:#9d2028;margin-top:22px}
.ai-check-note{font-size:13px;color:var(--ai-copy);line-height:1.85;margin:22px 0 0}
.ai-example-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;border:1px solid var(--ai-border);border-radius:16px;padding:32px;background:var(--ai-soft)}
.ai-example-grid blockquote{font-size:24px;font-weight:650;line-height:1.65;letter-spacing:-.5px;color:#283649;margin:16px 0 22px}
.ai-example-grid p{font-size:14px;color:var(--ai-copy);line-height:1.9;margin:0 0 16px}
.ai-example-grid small{font-size:12px;color:#677489;line-height:1.8;display:block}
.ai-example-steps{list-style:none;margin:0;padding:0}
.ai-example-steps li{display:flex;gap:16px;align-items:center;padding:13px 0;position:relative;min-height:50px}
.ai-example-steps li span{font-size:11px;color:#b2252d;background:#fff;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;border:1px solid #ead5d9;flex-shrink:0;z-index:1;font-weight:750}
.ai-example-steps li strong{font-size:14px;color:#344153;font-weight:650;line-height:1.8}
.ai-example-steps li:not(:last-child):after{content:"";position:absolute;left:14px;top:34px;bottom:-18px;width:1px;background:#d8dfe8}
.ai-audience-grid{margin-top:0}.ai-audience-grid h3{font-size:18px}
.ai-lab-connections{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 26px}
.ai-lab-connections span{padding:9px 14px;border:1px solid var(--ai-border);border-radius:8px;font-size:13px;color:#42536a;background:var(--ai-soft)}
.ai-lab-loop{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px;list-style:none;padding:24px 18px;margin:0 0 24px;background:var(--ai-soft);border-radius:14px}
.ai-lab-loop li{position:relative;text-align:center;display:flex;flex-direction:column;gap:7px;padding:12px 0}
.ai-lab-loop li b{font-size:14px;color:#344153;font-weight:750}.ai-lab-loop li span{font-size:13px;color:var(--ai-copy)}
.ai-lab-loop li:not(:last-child):after{content:"→";position:absolute;right:-16px;top:20px;color:#b2252d;font-size:18px}
.ai-closing{text-align:center;padding:58px 24px;background:linear-gradient(140deg,#fff0f2,#f8fafc);border:1px solid #eddde1;border-radius:18px;margin:64px 0 76px}
.ai-closing>p{font-size:16px;color:#42536a;line-height:1.9;margin:0 0 26px}.ai-closing h2{font-size:clamp(34px,4vw,52px);line-height:1.25;letter-spacing:-1.5px;color:#b2252d;margin:0 0 32px}
.ai-closing>div:last-child{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
@media(max-width:1000px){.ai-intro-grid{gap:34px;grid-template-columns:1.2fr 1fr}.ai-hero-diagram{padding:24px}.ai-intro h1{font-size:46px}.ai-foundation-grid{gap:14px}.ai-foundation-grid article{padding:22px}.ai-agent-steps{grid-template-columns:repeat(2,minmax(0,1fr))}.ai-refinement,.ai-example-grid{gap:28px}.ai-example-grid blockquote{font-size:21px}}
@media(max-width:700px){.ai-container{padding:0 20px}.ai-intro{padding:44px 0 24px}.ai-intro-grid{grid-template-columns:1fr;gap:30px}.ai-intro h1{font-size:clamp(32px,8.5vw,43px);letter-spacing:-1px}.ai-intro-lead{font-size:17px}.ai-copy{font-size:14px}.ai-hero-diagram{padding:24px}.ai-page-index{margin-top:30px;gap:9px 18px}.ai-page-index a{font-size:12px}.ai-section{padding:44px 0}.ai-section-head{margin-bottom:24px}.ai-section-head h2{font-size:29px;letter-spacing:-.5px}.ai-section-head>p{font-size:15px}.ai-prompt-board{padding:22px 20px}.ai-prompt-grid blockquote{font-size:13px;width:100%;padding:12px}.ai-use-cards,.ai-trust-grid,.ai-audience-grid,.ai-foundation-grid{grid-template-columns:1fr;gap:16px}.ai-use-cards article,.ai-trust-grid article,.ai-audience-grid article{padding:24px}.ai-responsibilities{grid-template-columns:1fr;padding:24px;gap:16px}.ai-role-connector{transform:rotate(90deg)}.ai-formula{gap:9px}.ai-formula span{font-size:12px}.ai-agent-steps{grid-template-columns:1fr;gap:14px}.ai-agent-steps li{padding:24px}.ai-agent-steps li>span{margin-bottom:14px}.ai-refinement,.ai-example-grid{grid-template-columns:1fr;padding:24px;gap:22px}.ai-refinement-questions blockquote{font-size:16px}.ai-key-line{font-size:15px}.ai-lab-loop{grid-template-columns:1fr;gap:14px;padding:20px}.ai-lab-loop li{padding:10px 0}.ai-lab-loop li:not(:last-child):after{content:"↓";left:0;right:0;top:auto;bottom:-22px}.ai-closing{padding:40px 20px;margin:44px 0 48px}.ai-closing>p{font-size:14px}.ai-closing h2{font-size:32px;letter-spacing:-1px}.ai-closing>div:last-child{gap:12px}}