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/* Editorial motion direction — type, asymmetric service layout, dark journey. */
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@keyframes ah-line-in{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@media(max-width:1050px){.ah-dossier{column-gap:27px;grid-template-columns:.75fr 2fr;padding:0 26px}.ah-dossier ol{gap:17px}.ah-dossier-title h2{font-size:26px}.ah-dossier-title h2 br{display:block}.ah-service-main .ah-service-name{font-size:39px}.ah-policy-grid{gap:45px}.ah-tools-row{gap:20px}}
@media(max-width:800px){.ah-hero-grid{padding-top:49px;gap:34px}.ah-hero h1{font-size:49px}.ah-hero-copy{max-width:none}.ah-dossier{grid-template-columns:1fr;padding:0 24px;max-width:none;border-radius:14px 14px 0 0;gap:0}.ah-dossier-top{font-size:12px;letter-spacing:.08em}.ah-dossier-title{padding:22px 0 10px}.ah-dossier-title h2{font-size:25px}.ah-dossier-title h2 br{display:none}.ah-dossier ol{gap:21px}.ah-dossier li{padding:18px 0 25px;gap:15px}.ah-dossier li:before{top:33px}.ah-dossier b{display:none}.ah-dossier small{font-size:12px;max-width:none}.ah-dossier strong{font-size:14px}.ah-evidence-strip{padding-top:25px;padding-bottom:22px}.ah-services{grid-template-columns:1fr;grid-template-rows:auto}.ah-service-main{grid-row:auto;min-height:370px;padding:29px}.ah-service-main .ah-service-name{margin-top:18px;margin-bottom:15px;font-size:39px}.ah-service-main .button{margin-top:20px}.ah-service{padding:28px}.ah-section{padding-top:54px;padding-bottom:54px}.academic-home .ah-section-head h2{font-size:28px}.ah-policy{padding:50px 0}.ah-policy-grid{grid-template-columns:1fr;gap:30px}.ah-policy h2{font-size:32px}.ah-reading{grid-template-columns:1fr;gap:25px}.ah-feature-read{padding:29px}.ah-feature-read h3{font-size:29px}.ah-tools-row{grid-template-columns:1fr;padding:24px}.ah-end{padding-top:53px;padding-bottom:53px}.ah-end h2{font-size:26px}.home-page footer{border-radius:18px 18px 0 0}}
@media(max-width:480px){.ah-hero-grid{padding-top:40px}.ah-kicker{font-size:12px;letter-spacing:.045em;margin-bottom:23px;gap:8px}.ah-kicker>span{width:16px}.ah-hero h1{font-size:36px;line-height:1.42;letter-spacing:-.04em;margin-bottom:24px}.ah-title-second em:after{bottom:-5px}.ah-lead{font-size:14px;line-height:2}.ah-actions{gap:12px}.ah-actions .button,.ah-actions .ah-secondary{padding:12px 17px;min-height:48px;font-size:13px}.ah-caption{font-size:12px}.ah-reader-links>a{display:block;font-size:13px;padding:0 19px}.ah-reader-links span{font-size:12px;margin-top:3px}.ah-dossier{padding:0 19px}.ah-dossier-top{font-size:12px}.ah-dossier-title h2{font-size:24px}.ah-dossier ol{gap:14px}.ah-dossier strong{font-size:13px;letter-spacing:0}.ah-dossier li a{padding:0}.ah-dossier small{font-size:12px;line-height:1.9}.ah-dossier-foot{font-size:12px;padding:13px 0}.ah-evidence-strip strong{font-size:26px}.ah-service p{font-size:15px}.ah-source-list{padding:23px}.ah-reading-list h3{font-size:16px}.ah-reading-list p{font-size:13px}.ah-faq summary{font-size:15px}.ah-end h2{font-size:22px}}
@media(prefers-reduced-motion:reduce){.academic-home *, .academic-home *:before,.academic-home *:after,.home-page .header nav a:after{animation:none!important;transition:none!important}.academic-home a:hover,.ah-service:hover{transform:none}.home-page{scroll-behavior:auto!important}.home-scroll-progress{display:none}}


.ah-dossier ol{align-items:stretch}.ah-dossier li{justify-content:center}.ah-dossier li:before{top:36px}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto!important}}

/* Search-led academic identity: oversized AI wordmark and live source index. */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.ah-hero{background:radial-gradient(ellipse at 10% 15%,#e3ecff8a,transparent 55%),#f6f9fc}.ah-hero-grid{grid-template-columns:1fr 1fr;gap:65px;align-items:start;padding-top:57px;padding-bottom:57px}.ah-hero-copy{text-align:left;padding-top:17px}.ah-kicker{justify-content:flex-start;font-size:12px;letter-spacing:.2em;margin-bottom:29px}.ah-hero h1{line-height:1.15;margin-bottom:28px;font-size:54px;letter-spacing:-.06em}.ah-title-first{display:block;font-size:43px;font-weight:600;letter-spacing:-.04em;margin-bottom:24px}.home-ai-type{font-family:Arial,sans-serif;font-size:1.45em;letter-spacing:-.07em;font-weight:700;display:inline-block;color:#2d59dd!important;margin:0 .05em}.ah-hero h1 .ah-title-second{display:block;font-size:49px;line-height:1.45;letter-spacing:0}.ah-title-second em:after{bottom:-5px;height:1px}.ah-lead{font-size:16px;line-height:1.95;max-width:450px;margin-bottom:26px}.ah-actions{justify-content:flex-start;gap:15px}.ah-actions .button,.ah-actions .ah-secondary{font-size:14px;padding:13px 22px}.ah-caption{font-size:12px;line-height:1.8;margin:15px 0 21px}.home-intent-links{display:flex;gap:20px;flex-wrap:wrap;border-top:1px solid #dce5ef;padding-top:18px;margin-bottom:21px}.home-intent-links a{font-size:13px;color:#526a84}.home-intent-links a:hover{text-decoration:underline;text-underline-offset:5px}.ah-reader-links{justify-content:flex-start;gap:0}.ah-reader-links>a{display:block;padding:0 25px;font-size:14px}.ah-reader-links>a:first-child{padding-left:0}.ah-reader-links span{font-size:12px;margin-top:5px}.home-school-workspace{border:1px solid #d6e0eb;background:#fff;border-radius:15px;box-shadow:0 20px 50px -25px #193c6b45;overflow:hidden;padding:25px 28px 19px;position:relative}.home-school-workspace:before{content:"";height:3px;position:absolute;top:0;left:0;right:0;background:linear-gradient(90deg,#2048bd,#7398ff)}.home-workspace-top{display:flex;justify-content:space-between;gap:14px;font-size:12px;color:#7b8c9c;margin-bottom:20px}.home-workspace-top>span:first-child{color:#355783}.academic-home .home-school-workspace h2{font-size:25px;letter-spacing:0;margin-bottom:7px;font-weight:500}.home-workspace-desc{font-size:14px;color:#718197;margin-bottom:18px}.home-search-field{display:flex;align-items:center;border:1px solid #b9cce0;border-radius:7px;padding:5px;background:#f9fbff;gap:6px;transition:box-shadow .2s,border-color .2s}.home-search-field:focus-within{border-color:#3569e8;box-shadow:0 0 0 3px #3264d912}.home-search-field>span{font:28px Georgia,serif;margin:0 3px 0 7px;color:#6481a0}.home-search-field input{border:0;outline:0;background:transparent;min-width:0;flex:1;font:14px/1.5 inherit;color:#1d3650;padding:7px 0}.home-search-field input::placeholder{color:#7b8ca2}.home-search-field button{border:0;border-radius:5px;background:#244ddd;color:#fff;padding:10px 14px;font:14px/1.2 "Microsoft YaHei",sans-serif;cursor:pointer;white-space:nowrap}.home-search-field #home-school-clear{background:transparent;color:#6b8098;padding:8px 4px;font-size:12px}.home-search-examples{display:flex;align-items:center;gap:8px;font-size:12px;margin:10px 0 20px;color:#7e8c9b}.home-search-examples button{border:0;background:#f0f4f9;padding:4px 10px;border-radius:4px;color:#476480;font:12px/1.5 "Microsoft YaHei",sans-serif;cursor:pointer}.home-search-examples button:hover{background:#e3ecff;color:#244ddd}.home-results-heading{display:flex;gap:8px;justify-content:space-between;color:#8190a0;font-size:12px;padding-bottom:10px;border-bottom:1px solid #e4eaf1}.home-results-heading a{color:#3a608a}.home-school-results{max-height:338px;overflow:auto;scrollbar-width:thin;scrollbar-color:#c5d3e4 transparent}.home-school-results article{padding:15px 0;border-bottom:1px solid #e5ebf2}.home-school-row{display:flex;justify-content:space-between;gap:12px;align-items:center}.home-school-row h3{font-size:16px;line-height:1.5;font-weight:600;margin-bottom:0}.home-school-row>span{background:#edf3fb;color:#58738f;font-size:12px;padding:2px 7px;border-radius:4px;white-space:nowrap}.home-school-scope{font-size:12px;line-height:1.7;color:#7d8b9a;margin:5px 0 9px}.home-school-rule{display:flex;justify-content:space-between;gap:12px;font-size:13px;line-height:1.7;color:#405c79}.home-school-rule>span{font-weight:500}.home-school-rule>a{font-size:12px;white-space:nowrap;color:#406ba3}.home-school-system{font-size:12px;color:#7d8b9a;margin:5px 0 0}.home-workspace-foot{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:#8090a1;margin-top:13px}.home-workspace-foot a{color:#38649b}.home-workspace-note{font-size:12px;line-height:1.8;color:#77889b;margin:10px 0 0}.home-school-results #home-school-empty{padding:26px 0}.home-school-results #home-school-empty strong{font-size:16px;font-weight:500}.home-school-results #home-school-empty p,.home-school-results #home-school-empty a{font-size:14px;margin-top:9px}.home-school-results #home-school-empty a{color:#2854b9}.ah-evidence-strip{padding-top:25px;padding-bottom:25px}.academic-home button:focus-visible{outline:3px solid #efab35;outline-offset:3px}.academic-home .ah-service-main{min-height:400px}.ah-services{grid-template-columns:1fr 1fr}.ah-service-main .ah-service-name{margin-top:36px}.ah-policy h2{font-size:36px}.ah-section{padding-top:70px;padding-bottom:70px}
@media(max-width:1100px){.ah-hero-grid{gap:32px}.ah-hero h1 .ah-title-second{font-size:43px}.ah-title-first{font-size:39px}.home-school-workspace{padding:23px}.ah-actions .button,.ah-actions .ah-secondary{padding:12px 17px}.ah-lead{font-size:15px}.home-intent-links{gap:14px}}
@media(max-width:800px){.ah-hero-grid{grid-template-columns:1fr;padding-top:34px;padding-bottom:35px;gap:30px}.ah-hero-copy{padding-top:0}.ah-hero h1 .ah-title-second{font-size:42px}.ah-hero h1 .ah-title-second br{display:none}.ah-title-first{font-size:37px;margin-bottom:16px}.ah-kicker{margin-bottom:22px}.ah-lead{max-width:560px;font-size:16px}.home-school-workspace{max-width:620px;width:100%}.home-school-results{max-height:338px}.ah-services{grid-template-columns:1fr}.ah-section{padding-top:49px;padding-bottom:49px}}
@media(max-width:480px){.ah-hero-grid{gap:26px}.ah-title-first{font-size:35px}.ah-hero h1 .ah-title-second{font-size:33px;line-height:1.5}.ah-hero h1 .ah-title-second br{display:block}.ah-hero h1{margin-bottom:19px}.ah-lead{font-size:15px}.ah-actions{gap:10px}.ah-actions .button,.ah-actions .ah-secondary{font-size:13px;padding:12px 16px;min-height:48px}.home-intent-links{gap:17px}.home-intent-links a{font-size:12px}.ah-caption{font-size:12px}.ah-reader-links>a{font-size:13px;padding:0 22px}.home-school-workspace{padding:22px 18px 17px}.academic-home .home-school-workspace h2{font-size:22px}.home-workspace-desc{font-size:13px}.home-workspace-top{font-size:12px}.home-search-field{gap:3px}.home-search-field input{font-size:16px;width:100px}.home-search-field button{padding:10px}.home-search-field>span{margin-left:2px}.home-results-heading{font-size:11px}.home-school-row h3{font-size:15px}.home-school-rule{font-size:12px}.home-workspace-foot{font-size:11px}.ah-evidence-strip{gap:10px}.ah-evidence-strip div>span{font-size:12px}.ah-service-main .ah-service-name{margin-top:20px}}

.home-definition-link{text-decoration:underline;text-decoration-color:#bbcce4;text-underline-offset:4px}.home-search-field input{font-family:inherit;line-height:1.5}
@media(max-width:480px){.ah-hero-grid{padding-top:25px;gap:22px}.ah-kicker{margin-bottom:15px}.ah-title-first{margin-bottom:13px}.ah-hero h1 .ah-title-second{font-size:25px;line-height:1.45}.ah-hero h1 .ah-title-second br{display:none}.ah-hero h1{margin-bottom:16px}.ah-lead{line-height:1.75;margin-bottom:19px}.ah-caption{margin:11px 0 15px}.home-intent-links{padding-top:12px;margin-bottom:16px}.home-results-heading,.home-workspace-foot{font-size:12px}}