:root{
 --as-ink:#171717;--as-muted:#686868;--as-paper:#fff;--as-soft:#f6f6f3;
 --as-line:#d9d9d4;--as-yellow:#f4d84a;--as-green:#dfe8c9;--as-blue:#dceaf2;
}
html{scroll-behavior:smooth;scroll-padding-top:96px}
.aist-page{background:var(--as-paper);color:var(--as-ink);
 font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif;
 font-feature-settings:"palt";letter-spacing:.025em;padding:1px 0 96px}
.aist-wrap{width:min(1180px,calc(100% - 64px));margin-inline:auto}
.aist-bc{display:flex;flex-wrap:wrap;gap:9px;margin:24px 0 56px;font-size:12px;line-height:1.7;color:#696969}
.aist-bc a{color:inherit;text-decoration:underline;text-underline-offset:3px}
.aist-hero{max-width:1000px}
.aist-hero__meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--as-muted)}
.aist-pill{border:1.5px solid var(--as-ink);border-radius:999px;padding:7px 14px;color:inherit;text-decoration:none;font-weight:700}
.aist-hero h1{max-width:940px;font-size:clamp(38px,5.2vw,68px);font-weight:700;line-height:1.3;letter-spacing:.015em;margin:28px 0 30px}
.aist-lead{max-width:790px;font-size:19px;font-weight:500;line-height:2;color:#404040;margin:0}
.aist-layout{display:grid;grid-template-columns:minmax(0,760px) 280px;gap:96px;align-items:start;margin-top:72px}
.aist-entry{font-size:18px;line-height:2.05;letter-spacing:.035em}
.aist-entry p{margin:0 0 32px}
.aist-entry h2{font-size:32px;line-height:1.55;letter-spacing:.025em;margin:88px 0 32px;padding:25px 0 0;border-top:2px solid var(--as-ink)}
.aist-entry h3{font-size:23px;line-height:1.65;margin:52px 0 22px;padding-left:17px;border-left:6px solid var(--as-yellow)}
.aist-entry h4{font-size:19px;line-height:1.7;margin:36px 0 15px}
.aist-entry strong{font-weight:700;background:linear-gradient(transparent 70%,rgba(244,216,74,.48) 70%)}
.aist-entry a{text-decoration-thickness:1px;text-underline-offset:4px}
.aist-entry ul,.aist-entry ol{padding-left:1.55em;margin:25px 0 38px}
.aist-entry li{padding-left:.2em;margin:.75em 0}
.aist-entry blockquote{margin:36px 0;padding:24px 28px;border-left:6px solid var(--as-ink);background:var(--as-soft);font-size:16px}
.aist-entry table{display:table;width:100%;border-collapse:collapse;margin:36px 0 48px;background:#fff;font-size:15px;line-height:1.8}
.aist-entry th,.aist-entry td{border:1px solid var(--as-line);padding:16px 18px;text-align:left;vertical-align:top}
.aist-entry th{background:var(--as-soft);font-weight:700}
.aist-entry img{max-width:100%;height:auto;border-radius:2px}
.aist-toc{margin:0 0 68px;border-top:2px solid var(--as-ink);border-bottom:1px solid var(--as-line)}
.aist-toc__head{appearance:none;width:100%;border:0;background:transparent;display:grid;grid-template-columns:115px 1fr 36px;align-items:center;text-align:left;padding:23px 0;cursor:pointer}
.aist-toc__head span{font-size:11px;font-weight:700;letter-spacing:.16em}
.aist-toc__head strong{font-size:19px}.aist-toc__head i{text-align:right;font-style:normal;font-size:24px}
.aist-toc ol{list-style:none;margin:0;padding:4px 0 28px;counter-reset:as-toc}
.aist-toc li{counter-increment:as-toc;margin:13px 0}
.aist-toc li.lv2 a:before{content:counter(as-toc,decimal-leading-zero) "  ";font-size:11px;font-weight:700;color:#777;margin-right:8px}
.aist-toc li.lv3{padding-left:42px;font-size:14px}.aist-toc a{color:inherit;text-decoration:none;line-height:1.65}.aist-toc a:hover{text-decoration:underline}
.aist-side{position:sticky;top:96px}
.aist-sidebox{border-top:2px solid var(--as-ink);padding-top:17px}
.aist-sidebox>span{font-size:10px;font-weight:700;letter-spacing:.17em}.aist-sidebox>strong{display:block;font-size:15px;margin:8px 0 18px}
.aist-sidebox ul{list-style:none;padding:0;margin:0}.aist-sidebox li{border-top:1px solid var(--as-line);padding:12px 0;line-height:1.5}.aist-sidebox li ul{padding:7px 0 0 14px}.aist-sidebox a{font-size:13px;color:inherit;text-decoration:none}
.aist-nobirun{position:relative;margin:96px 0 30px;padding:48px 50px;background:#f3efdc;border:2px solid var(--as-ink);border-radius:34px;display:grid;grid-template-columns:1fr 140px;gap:28px;overflow:hidden}
.aist-nobirun__mini{font-size:11px;font-weight:700;letter-spacing:.16em}
.aist-nobirun h2{border:0!important;padding:0!important;margin:15px 0 20px!important;font-size:34px!important;line-height:1.45!important}
.aist-nobirun p{font-size:16px;line-height:1.9}
.aist-nobirun a{display:inline-flex;align-items:center;gap:22px;background:var(--as-ink);color:#fff!important;text-decoration:none;padding:15px 23px;border-radius:999px;font-weight:700}
.aist-nobirun__mark{width:126px;height:126px;border:3px solid var(--as-ink);border-radius:50%;display:grid;place-items:center;align-self:center;font-size:60px;font-weight:700;background:var(--as-yellow)}
.aist-related{margin-top:110px;padding-top:34px;border-top:2px solid var(--as-ink)}
.aist-section-kicker{font-size:11px;font-weight:700;letter-spacing:.2em}
.aist-related>h2,.aist-cathead h1{font-size:clamp(34px,4vw,50px);line-height:1.35;margin:9px 0 40px}
.aist-cardgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.aist-card{border-top:1.5px solid var(--as-ink);background:#fff}.aist-card>a{display:block;color:inherit;text-decoration:none}
.aist-card img,.aist-card__blank{display:block;width:100%;aspect-ratio:16/10;object-fit:cover;margin-top:14px}
.aist-card__blank{display:grid;place-items:center;background:var(--as-soft);font-size:24px;font-weight:700}
.aist-card__body{padding:18px 0 8px}.aist-card time{font-size:11px;color:#777}
.aist-card h2,.aist-card h3{font-size:18px;line-height:1.65;margin:9px 0 14px}.aist-card p{font-size:13px;line-height:1.8;color:#666}.aist-card span{font-size:10px;font-weight:700;letter-spacing:.1em}
.aist-cathead{padding:25px 0 62px}.aist-catdesc{max-width:760px;font-size:17px;line-height:2;color:#555}
.aist-archive{padding-bottom:70px}.aist-pagination{margin-top:56px}.aist-pagination .nav-links{display:flex;gap:8px}
.aist-pagination a,.aist-pagination span{display:grid;place-items:center;min-width:44px;height:44px;border:1px solid var(--as-line);text-decoration:none;color:inherit}
@media(max-width:920px){.aist-layout{grid-template-columns:1fr;gap:0}.aist-side{display:none}.aist-cardgrid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){
 .aist-page{padding-bottom:64px}.aist-wrap{width:calc(100% - 36px)}.aist-bc{margin:18px 0 36px;font-size:11px}
 .aist-hero h1{font-size:34px;line-height:1.42;margin:21px 0}.aist-lead{font-size:17px;line-height:1.95}
 .aist-layout{margin-top:48px}.aist-entry{font-size:17px;line-height:2}.aist-entry p{margin-bottom:28px}
 .aist-entry h2{font-size:26px;line-height:1.55;margin-top:68px;padding-top:20px}.aist-entry h3{font-size:21px;margin-top:43px}
 .aist-entry table{display:block;overflow-x:auto;white-space:normal;font-size:14px}
 .aist-toc{margin-bottom:52px}.aist-toc__head{grid-template-columns:88px 1fr 28px;padding:19px 0}.aist-toc ol{padding-bottom:23px}.aist-toc li.lv3{padding-left:24px}
 .aist-nobirun{grid-template-columns:1fr;margin-top:70px;padding:30px 24px;border-radius:25px}.aist-nobirun h2{font-size:27px!important}.aist-nobirun__mark{display:none}
 .aist-related{margin-top:76px}.aist-cardgrid{grid-template-columns:1fr}.aist-related>h2,.aist-cathead h1{font-size:34px}
}

body{margin:0}.site-header{background:#fff;border-bottom:1px solid #e4e4df;position:relative;z-index:20}.site-header__inner{width:min(1240px,calc(100% - 48px));height:82px;margin:auto;display:flex;align-items:center;justify-content:space-between}.site-logo{font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif;font-size:22px;font-weight:800;letter-spacing:.08em;color:#171717;text-decoration:none}.site-logo span{display:inline-grid;place-items:center;width:42px;height:42px;border:2px solid #171717;border-radius:50%;margin-right:8px;background:#f4d84a}.site-nav ul{display:flex;gap:30px;list-style:none;margin:0;padding:0}.site-nav a{font-size:14px;font-weight:700;color:#171717;text-decoration:none}.site-menu{display:none;border:0;background:none}.site-footer{background:#171717;color:#fff;padding:64px 0 34px;margin-top:0}.site-footer__inner{display:grid;grid-template-columns:1fr auto;gap:40px}.site-logo--footer{color:#fff}.site-footer p{color:#bbb}.site-footer small{grid-column:1/-1;color:#888;border-top:1px solid #444;padding-top:22px}.site-footer a{color:#fff}
@media(max-width:700px){.site-header__inner{height:68px;width:calc(100% - 32px)}.site-nav{display:none}.site-menu{display:block}.site-logo{font-size:18px}.site-logo span{width:36px;height:36px}.site-footer__inner{grid-template-columns:1fr}}

/* v1.1 — energetic editorial system */
:root{--as-red:#ff3b30;--as-blue2:#1769ff;--as-lime:#c9ff45;--as-yellow2:#ffd928;--as-black:#111}
body{background:#fff}
.site-header{height:112px;border:0;background:#fff;overflow:hidden}
.site-header__inner{height:112px;position:relative;z-index:2}
.site-logo{display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;align-items:end;column-gap:9px;line-height:.9}
.site-logo b{grid-row:1/3;font:900 44px/1 "Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif;letter-spacing:-.08em}
.site-logo span{font:900 22px/1 "Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif;letter-spacing:.04em}
.site-logo small{font:700 8px/1.2 "Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif;letter-spacing:.18em;margin-top:5px}
.site-nav ul{gap:8px}.site-nav a{display:flex;align-items:center;gap:10px;border:1.5px solid #111;border-radius:999px;padding:12px 18px;background:#fff}
.site-nav a:hover{background:var(--as-lime)}.site-nav em{font:700 9px/1 "Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif;font-style:normal}
.site-header__dot{width:18px;height:18px;border-radius:50%;background:var(--as-red);box-shadow:24px 8px 0 var(--as-blue2),10px 27px 0 var(--as-yellow2);margin-left:28px}
.site-header__orbit{position:absolute;right:-45px;top:-92px;width:250px;height:250px;border:1px solid #ddd;border-radius:50%}.site-header__orbit i{position:absolute;border-radius:50%}.site-header__orbit i:nth-child(1){width:56px;height:56px;background:var(--as-blue2);left:18px;top:120px}.site-header__orbit i:nth-child(2){width:30px;height:30px;background:var(--as-red);left:91px;top:205px}.site-header__orbit i:nth-child(3){width:42px;height:42px;background:var(--as-lime);left:175px;top:152px}

.aist-page{position:relative;overflow:hidden}
.aist-page:before{content:"";position:absolute;width:330px;height:330px;border:72px solid #f2f2ee;border-radius:50%;right:-205px;top:130px;z-index:0}
.aist-page>.aist-wrap,.aist-page>.aist-layout,.aist-page>.aist-related{position:relative;z-index:1}
.aist-bc{margin-top:34px}
.aist-hero{padding:36px 0 18px}
.aist-hero:before{content:"ARTICLE";display:block;font:900 clamp(58px,10vw,132px)/.78 "Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif;letter-spacing:-.07em;color:#f1f1ed;margin:0 0 -15px -6px;position:relative;z-index:-1}
.aist-hero__meta{margin-top:-5px}
.aist-pill{border-radius:0;border-width:2px;background:var(--as-yellow2);box-shadow:5px 5px 0 #111}
.aist-hero h1{font-weight:800;letter-spacing:.01em;position:relative}
.aist-hero h1:after{content:"";display:inline-block;width:20px;height:20px;border-radius:50%;background:var(--as-red);margin-left:13px;vertical-align:middle;box-shadow:25px 7px 0 var(--as-blue2)}
.aist-lead{border-left:10px solid var(--as-lime);padding-left:25px}
.aist-layout{border-top:1px solid #111;padding-top:56px}
.aist-toc{position:relative;border:2px solid #111;padding:0 28px;background:#fff;box-shadow:10px 10px 0 #e9e9e3}
.aist-toc:before{content:"";position:absolute;width:20px;height:20px;background:var(--as-blue2);border-radius:50%;right:25px;top:-11px}
.aist-toc__head{border-bottom:1px solid #111}
.aist-entry h2{position:relative;border-top:4px solid #111}
.aist-entry h2:before{content:"";position:absolute;left:0;top:-4px;width:82px;height:4px;background:var(--as-blue2)}
.aist-entry h3{border-left:0;padding-left:30px}.aist-entry h3:before{content:"";display:inline-block;width:13px;height:13px;background:var(--as-yellow2);border-radius:50%;margin:0 14px 2px -28px}
.aist-entry blockquote{border:2px solid #111;box-shadow:7px 7px 0 var(--as-lime)}
.aist-entry table{border:2px solid #111}.aist-entry th{background:var(--as-yellow2)}
.aist-sidebox{border-top:5px solid #111}.aist-sidebox>span{font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif;font-size:12px}.aist-sidebox li{position:relative}.aist-sidebox li:before{content:"●";font-size:7px;margin-right:7px;color:var(--as-blue2)}
.aist-nobirun{background:var(--as-lime);border:3px solid #111;border-radius:56px 18px 56px 18px;box-shadow:12px 12px 0 #111}
.aist-nobirun__mark{background:var(--as-yellow2);box-shadow:10px 8px 0 var(--as-blue2)}
.aist-nobirun a{border:2px solid #111}.aist-nobirun a:hover{background:var(--as-blue2)}
.aist-related{border-top:5px solid #111}.aist-section-kicker{font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif;font-size:13px}
.aist-card{border-top:4px solid #111;transition:transform .2s}.aist-card:nth-child(3n+1){border-top-color:var(--as-red)}.aist-card:nth-child(3n+2){border-top-color:var(--as-blue2)}.aist-card:nth-child(3n){border-top-color:#111}.aist-card:hover{transform:translateY(-5px)}
.aist-card__blank{background:var(--as-yellow2);border-radius:50% 50% 8px 8px}
.aist-cathead{position:relative}.aist-cathead:before{content:"CATEGORY";display:block;font:900 clamp(65px,12vw,150px)/.8 "Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif;color:#f2f2ee;letter-spacing:-.07em;margin-bottom:-15px}
.aist-cathead h1{position:relative}.aist-cathead h1:after{content:"";display:inline-block;width:22px;height:22px;background:var(--as-lime);border-radius:50%;margin-left:14px;box-shadow:26px 8px 0 var(--as-red)}

.site-footer{position:relative;overflow:hidden;background:#111;padding:86px 0 34px}.site-footer__inner{grid-template-columns:1fr auto 1fr;position:relative;z-index:2}.site-logo--footer b,.site-logo--footer span,.site-logo--footer small{color:#fff}.site-footer__word{text-align:right;font:900 clamp(52px,7vw,100px)/.75 "Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif;letter-spacing:-.06em;color:#fff}.site-footer__shape{position:absolute;border-radius:50%}.site-footer__shape.s1{width:230px;height:230px;background:var(--as-blue2);right:-100px;top:-70px}.site-footer__shape.s2{width:150px;height:150px;background:var(--as-red);left:-70px;bottom:-40px}
@media(max-width:700px){
 .site-header{height:82px}.site-header__inner{height:82px}.site-logo b{font-size:34px}.site-logo span{font-size:17px}.site-header__dot{display:none}.site-header__orbit{right:-130px;top:-130px}
 .aist-page:before{display:none}.aist-hero{padding-top:15px}.aist-hero:before{font-size:62px;margin-bottom:-6px}.aist-hero h1:after{width:13px;height:13px;box-shadow:18px 5px 0 var(--as-blue2)}
 .aist-layout{padding-top:38px}.aist-toc{padding:0 17px;box-shadow:7px 7px 0 #e9e9e3}
 .aist-nobirun{border-radius:35px 12px 35px 12px;box-shadow:8px 8px 0 #111}
 .site-footer__inner{grid-template-columns:1fr}.site-footer__word{text-align:left;margin-top:25px}
}

/* v1.2 typography system */
:root{--as-font:"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",Meiryo,sans-serif}
body,.aist-page,.site-header,.site-footer{font-family:var(--as-font)}
.aist-entry{font-weight:400}
.aist-entry p,.aist-entry li,.aist-catdesc{font-weight:400}
.aist-lead{font-weight:400}
.site-nav a,.aist-pill,.aist-toc__head strong,.aist-nobirun a{font-weight:600}
.aist-entry h3,.aist-card h2,.aist-card h3{font-weight:600}
.aist-entry h2,.aist-hero h1,.aist-cathead h1,.aist-related>h2{font-weight:700}
.site-logo b,.site-logo span,.aist-hero:before,.aist-cathead:before,.site-footer__word{font-family:var(--as-font);font-weight:900}
.site-logo small,.aist-section-kicker,.aist-sidebox>span,.site-nav em{font-family:var(--as-font);font-weight:700}

/* v1.3 Nobirun brand system */
:root{
 --nobi-green:#59a83b;--nobi-green-dark:#287b36;--nobi-blue:#1766c2;
 --nobi-blue-dark:#0d448d;--nobi-cream:#fffaf0;--nobi-orange:#ff9d24;
 --nobi-ink:#17221b;--nobi-soft:#eef6e9;
}
.site-header__dot{background:var(--nobi-green);box-shadow:24px 8px 0 var(--nobi-blue),10px 27px 0 var(--nobi-orange)}
.site-header__orbit i:nth-child(1){background:var(--nobi-blue)}
.site-header__orbit i:nth-child(2){background:var(--nobi-orange)}
.site-header__orbit i:nth-child(3){background:var(--nobi-green)}
.site-nav a:hover{background:var(--nobi-soft)}
.site-logo b{color:var(--nobi-blue)}.site-logo span{color:var(--nobi-green-dark)}
.aist-pill{background:var(--nobi-soft);box-shadow:5px 5px 0 var(--nobi-green-dark)}
.aist-hero h1:after{background:var(--nobi-green);box-shadow:25px 7px 0 var(--nobi-blue)}
.aist-lead{border-left-color:var(--nobi-green)}
.aist-toc:before{background:var(--nobi-blue)}
.aist-entry h2:before{background:var(--nobi-green)}
.aist-entry h3:before{background:var(--nobi-orange)}
.aist-entry strong{background:linear-gradient(transparent 70%,rgba(126,190,86,.28) 70%)}
.aist-entry blockquote{box-shadow:7px 7px 0 var(--nobi-soft)}
.aist-entry th{background:var(--nobi-soft)}
.aist-sidebox li:before{color:var(--nobi-green)}
.aist-nobirun{background:linear-gradient(135deg,#f4faef,#fff7df);border-color:var(--nobi-ink);box-shadow:12px 12px 0 var(--nobi-blue-dark)}
.aist-nobirun a{background:var(--nobi-blue);border-color:var(--nobi-ink)}.aist-nobirun a:hover{background:var(--nobi-green-dark)}
.aist-nobirun__mascot{align-self:end;display:flex;align-items:flex-end;justify-content:center}
.aist-nobirun__mascot img{width:155px;max-width:100%;height:auto;filter:drop-shadow(0 8px 0 rgba(23,34,27,.10))}
.aist-card:nth-child(3n+1){border-top-color:var(--nobi-green)}
.aist-card:nth-child(3n+2){border-top-color:var(--nobi-blue)}
.aist-card__blank{background:var(--nobi-soft)}
.aist-cathead h1:after{background:var(--nobi-green);box-shadow:26px 8px 0 var(--nobi-blue)}
.site-footer{background:var(--nobi-blue-dark)}
.site-footer__shape.s1{background:var(--nobi-green)}
.site-footer__shape.s2{background:var(--nobi-orange)}
@media(max-width:640px){.aist-nobirun__mascot{display:flex}.aist-nobirun__mascot img{width:120px;margin:0 auto -15px}}

/* v1.4 — typography based on supplied Expo CSS */
:root{--as-font:"Open Sans","Zen Kaku Gothic New","游ゴシック体",YuGothic,"游ゴシック","Yu Gothic Medium","游ゴシック Medium","Hiragino Sans","ヒラギノ角ゴ Pro W3","Hiragino Kaku Gothic ProN","Hiragino Kaku Gothic Pro",-apple-system,BlinkMacSystemFont,"Helvetica Neue","Segoe UI","Noto Sans Japanese",Meiryo,sans-serif}
html{
 -webkit-text-size-adjust:100%;
 -webkit-overflow-scrolling:touch;
}
body,.aist-page,.site-header,.site-footer{
 font-family:var(--as-font);
 font-weight:500;
 color:#222426;
 word-break:normal;
 word-wrap:break-word;
 line-break:strict;
 overflow-wrap:break-word;
}
/* Editorial body keeps comfortable long-form reading metrics */
.aist-entry{
 font-family:var(--as-font);
 font-weight:500;
 font-size:18px;
 line-height:2.05;
}
.aist-entry p,.aist-entry li,.aist-catdesc,.aist-lead{font-weight:500}
.aist-entry h3,.aist-card h2,.aist-card h3{font-weight:700}
.aist-entry h2,.aist-hero h1,.aist-cathead h1,.aist-related>h2{font-weight:800}
.site-logo b,.site-logo span,.aist-hero:before,.aist-cathead:before,.site-footer__word{font-family:var(--as-font);font-weight:900}
.site-logo small,.aist-section-kicker,.aist-sidebox>span,.site-nav em{font-family:var(--as-font);font-weight:700}
.site-nav a,.aist-pill,.aist-toc__head strong,.aist-nobirun a{font-weight:700}
@media(max-width:640px){
 .aist-entry{font-size:17px;line-height:2}
}

/* v1.4.1 actual webfont loading */
body,.aist-page,.site-header,.site-footer,
.aist-entry,.aist-lead,.aist-bc,.aist-card,.aist-sidebox,.aist-nobirun{
 font-family:"Zen Kaku Gothic New","游ゴシック体",YuGothic,"游ゴシック","Yu Gothic Medium","Hiragino Sans","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;
 font-weight:500;
}
.site-logo b,.site-logo span,.site-logo small,
.aist-section-kicker,.aist-hero:before,.aist-cathead:before,
.site-footer__word,.site-nav em{
 font-family:"Open Sans","Zen Kaku Gothic New",sans-serif;
}
.aist-entry h3,.aist-card h2,.aist-card h3{font-weight:700}
.aist-entry h2,.aist-hero h1,.aist-cathead h1,.aist-related>h2{font-weight:700}
.site-logo b,.site-logo span,.aist-hero:before,.aist-cathead:before,.site-footer__word{font-weight:800}

/* v1.4.2 — top/header typography correction */
html,body,
.site-header,.site-header *,
.site-logo,.site-logo *,
.site-nav,.site-nav *,
.aist-page,.aist-page *,
.site-footer,.site-footer *{
 font-family:"Zen Kaku Gothic New","游ゴシック体",YuGothic,"游ゴシック",
 "Yu Gothic Medium","游ゴシック Medium","Hiragino Sans",
 "Hiragino Kaku Gothic ProN",Meiryo,sans-serif;
}
body{font-weight:500;color:#222426}
.site-logo b,
.site-logo span,
.aist-hero h1,
.aist-cathead h1,
.aist-entry h2,
.aist-related>h2,
.site-footer__word{
 font-weight:900;
}
.site-nav a,
.site-nav em,
.site-logo small,
.aist-section-kicker,
.aist-entry h3,
.aist-card h2,
.aist-card h3,
.aist-pill,
.aist-toc__head strong,
.aist-nobirun a{
 font-weight:700;
}
.site-logo b,.site-logo span{
 letter-spacing:-.045em;
}
.site-nav a{
 letter-spacing:.01em;
}

/* v2.0 full-site templates */
.aist-pagehead{padding:70px 0 34px}.aist-pagehead h1{font-size:clamp(38px,6vw,72px);line-height:1.12;font-weight:900;margin:.12em 0}
.aist-static{max-width:900px;padding-bottom:100px;font-size:18px;line-height:2}.aist-static h2{font-size:clamp(28px,4vw,42px);line-height:1.35;margin:2em 0 .7em;font-weight:900}.aist-static h3{font-size:24px;margin:1.8em 0 .6em;font-weight:700}
.aist-childcats{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.aist-childcats a{display:flex;gap:24px;justify-content:space-between;align-items:center;padding:12px 16px;border:2px solid #222426;border-radius:999px;text-decoration:none;color:#222426;background:#fff;font-weight:700}.aist-childcats a:hover{background:var(--nobi-soft)}
.aist-empty{text-align:center;padding:80px 20px 120px}.aist-empty img{width:160px}.aist-empty h2{font-size:32px;font-weight:900}.aist-empty input[type=search]{padding:14px;border:2px solid #222426;border-radius:12px}.aist-empty input[type=submit]{padding:14px 20px;border:2px solid #222426;background:var(--nobi-green);font-weight:700;border-radius:12px}
.aist-404{min-height:65vh;display:grid;grid-template-columns:1.4fr .6fr;align-items:center;gap:40px;padding-top:70px;padding-bottom:100px}.aist-404 h1{font-size:clamp(52px,8vw,100px);line-height:1.03;margin:.2em 0;font-weight:900}.aist-404>img{width:100%;max-width:300px}.aist-btn{display:inline-block;background:var(--nobi-blue);color:#fff!important;border:2px solid #222426;border-radius:999px;padding:15px 24px;text-decoration:none;font-weight:700;box-shadow:5px 5px 0 #222426}.aist-btn:hover{transform:translate(2px,2px);box-shadow:3px 3px 0 #222426}
.aist-homehero{overflow:hidden;background:var(--nobi-cream);border-bottom:2px solid #222426}.aist-homehero__grid{min-height:680px;display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:30px}.aist-homehero h1{font-size:clamp(58px,8vw,112px);line-height:.98;letter-spacing:-.065em;margin:.18em 0;font-weight:900}.aist-homehero h1 em{font-style:normal;color:var(--nobi-blue)}.aist-homehero p{font-size:18px;line-height:1.9;max-width:680px}.aist-homehero__actions{display:flex;align-items:center;gap:26px;margin-top:34px}.aist-textlink{font-weight:700;color:#222426}
.aist-homehero__visual{height:520px;position:relative;display:flex;align-items:flex-end;justify-content:center}.aist-homehero__visual img{position:relative;z-index:3;width:70%;max-width:330px;filter:drop-shadow(0 15px 0 rgba(23,34,27,.08))}.aist-homehero__visual .leaf{position:absolute;background:var(--nobi-green);border:2px solid #222426;border-radius:100% 0 100% 0}.aist-homehero__visual .l1{width:230px;height:115px;right:5%;top:8%;transform:rotate(18deg)}.aist-homehero__visual .l2{width:180px;height:90px;left:0;top:24%;transform:rotate(-28deg)}.aist-homehero__visual .shell{position:absolute;width:380px;height:380px;border-radius:50%;background:var(--nobi-blue);border:2px solid #222426;bottom:20px}
.aist-homeband{background:var(--nobi-blue-dark);color:#fff}.aist-homeband .aist-wrap{display:flex;align-items:center;gap:30px;padding-top:22px;padding-bottom:22px}.aist-homeband b{font-size:30px;font-weight:900}.aist-homeband span{font-weight:700}
.aist-homecats,.aist-homecolumn{padding-top:100px;padding-bottom:110px}.aist-home-title h2{font-size:clamp(38px,5vw,64px);line-height:1.1;margin:.15em 0 45px;font-weight:900}.aist-homecatgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.aist-homecatgrid>a{position:relative;min-height:260px;padding:28px;border:2px solid #222426;border-radius:34px;text-decoration:none;color:#222426;background:#fff;box-shadow:8px 8px 0 var(--nobi-green)}.aist-homecatgrid>a:nth-child(2){box-shadow-color:var(--nobi-blue)}.aist-homecatgrid>a:nth-child(3){box-shadow-color:var(--nobi-orange)}.aist-homecatgrid small{font-weight:900}.aist-homecatgrid h3{font-size:34px;margin:40px 0 10px;font-weight:900}.aist-homecatgrid p{line-height:1.7}.aist-homecatgrid>a>span{position:absolute;right:25px;bottom:20px;font-size:30px}
.aist-service{background:var(--nobi-soft);border-top:2px solid #222426;border-bottom:2px solid #222426}.aist-service__grid{display:grid;grid-template-columns:1fr 320px;align-items:center;gap:50px;padding-top:75px;padding-bottom:75px}.aist-service h2{font-size:clamp(44px,6vw,76px);margin:.15em 0;font-weight:900}.aist-service p{font-size:18px;line-height:1.9;max-width:650px}.aist-service img{width:100%;max-width:280px;justify-self:center}
@media(max-width:800px){.aist-homehero__grid{grid-template-columns:1fr;min-height:auto;padding-top:70px}.aist-homehero__visual{height:380px}.aist-homehero h1{font-size:clamp(48px,15vw,78px)}.aist-homecatgrid{grid-template-columns:1fr}.aist-service__grid{grid-template-columns:1fr}.aist-service img{width:180px}.aist-404{grid-template-columns:1fr}.aist-404>img{width:180px}.aist-static{font-size:17px}.aist-homehero__actions{align-items:flex-start;flex-direction:column}}

/* v2.1 vector mascot integration */
.aist-homehero__visual{overflow:visible}
.aist-homehero__visual img,
.aist-service__grid img,
.aist-nobirun__mascot img,
.aist-empty img,
.aist-404>img,
.aist-pagehead__mascot{
 object-fit:contain;
 object-position:center;
 background:transparent;
 border:0;
 clip-path:none;
}
.aist-homehero__visual img{width:min(78%,360px);height:auto;max-height:430px}
.aist-service__grid img{width:min(100%,260px);height:auto;max-height:280px}
.aist-nobirun__mascot img{width:150px;height:auto;max-height:190px}
.aist-empty img{width:150px;height:150px}
.aist-404>img{width:min(100%,280px);height:auto}
.aist-pagehead{display:flex;align-items:flex-end;justify-content:space-between;gap:30px}
.aist-pagehead__mascot{width:130px;height:130px;flex:0 0 auto}
@media(max-width:640px){
 .aist-homehero__visual img{width:min(72%,280px);max-height:320px}
 .aist-service__grid img{width:170px;max-height:190px}
 .aist-pagehead__mascot{width:90px;height:90px}
}

/* v2.2 reusable clean SVG mascot + fixed hero line breaks */
.nobirun-svg{display:block;max-width:100%;height:auto;background:transparent}
.aist-homehero h1 span,.aist-homehero h1 em{display:block}
.aist-homehero h1 em{white-space:nowrap}
.aist-homehero__grid{grid-template-columns:minmax(0,1.28fr) minmax(330px,.72fr)}
.aist-homehero h1{font-size:clamp(54px,6.7vw,94px);letter-spacing:-.055em}
@media(max-width:800px){
 .aist-homehero__grid{grid-template-columns:1fr}
 .aist-homehero h1{font-size:clamp(44px,12.2vw,70px)}
 .aist-homehero h1 em{white-space:normal}
}
@media(min-width:801px) and (max-width:1120px){
 .aist-homehero h1{font-size:clamp(50px,6.1vw,72px)}
}

/* v2.2.1 lower-page mascot cleanup */
.aist-nobirun img,.aist-nobirun__mascot img,
.aist-empty img,.aist-404 img,.aist-pagehead img,
.aist-cathead img,.aist-archive img.nobirun-svg{
 background:transparent!important;
 object-fit:contain!important;
 clip-path:none!important;
}

/* v2.3 trust/legal pages */
.aist-pagehead{padding-top:72px;padding-bottom:28px}
.aist-pagehead h1{margin:.15em 0 0;font-size:clamp(38px,5vw,64px);line-height:1.16;letter-spacing:-.045em}
.aist-pagebody{max-width:900px;margin:0 auto;padding:20px 24px 100px;font-size:18px;line-height:2}
.aist-pagebody h2{margin:2.4em 0 .65em;font-size:clamp(25px,3vw,34px);line-height:1.4}
.aist-pagebody p{margin:0 0 1.35em}
.aist-pagebody table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid #dfe7df;border-radius:18px;overflow:hidden}
.aist-pagebody th,.aist-pagebody td{padding:17px 20px;border-bottom:1px solid #dfe7df;text-align:left;vertical-align:top}
.aist-pagebody tr:last-child th,.aist-pagebody tr:last-child td{border-bottom:0}
.aist-pagebody th{width:26%;background:#f4f8f2}
.aist-contact-form{display:grid;gap:22px;margin-top:36px}
.aist-contact-form label{display:grid;gap:8px;font-weight:700}
.aist-contact-form label>span{display:inline-block;width:max-content;font-size:12px;line-height:1;padding:5px 7px;border-radius:999px;background:#e95555;color:#fff}
.aist-contact-form input,.aist-contact-form select,.aist-contact-form textarea{width:100%;box-sizing:border-box;border:1px solid #cad7cb;border-radius:12px;background:#fff;padding:14px 16px;font:inherit}
.aist-contact-form textarea{resize:vertical}
.aist-contact-form .aist-contact-consent{display:block;font-weight:500}
.aist-contact-form .aist-contact-consent input{width:auto;margin-right:7px}
.aist-contact-form button{justify-self:start;border:0;border-radius:999px;background:#1766c2;color:#fff;padding:15px 32px;font:700 16px inherit;cursor:pointer}
.aist-form-success{padding:16px 20px;border-radius:14px;background:#eef8ea;margin-bottom:28px}
.aist-footer__legal{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:28px;font-size:13px}
.aist-footer__legal a{color:inherit;text-decoration:none;opacity:.82}
@media(max-width:640px){
 .aist-pagebody{font-size:17px;padding-left:20px;padding-right:20px}
 .aist-pagebody th,.aist-pagebody td{display:block;width:auto}
 .aist-pagebody th{border-bottom:0;padding-bottom:4px}
 .aist-pagebody td{padding-top:4px}
}

/* v2.4 — AI STUDY trust pages: energetic / living / open visual system */
.aist-trust-main{background:#fffdf7;color:#222426;overflow:hidden}
.aist-trust-hero{position:relative;min-height:500px;padding:88px 0 0;background:#fffdf7;isolation:isolate}
.aist-trust-hero__inner{position:relative;z-index:3;display:grid;grid-template-columns:minmax(0,1fr) 310px;align-items:center;gap:48px}
.aist-trust-no{display:inline-flex;align-items:center;gap:12px;font:700 12px/1 "Open Sans",sans-serif;letter-spacing:.14em;text-transform:uppercase}
.aist-trust-no:before{content:"";width:42px;height:4px;border-radius:999px;background:#1766c2}
.aist-trust-en{margin:32px 0 4px!important;font:800 clamp(46px,7vw,92px)/.9 "Open Sans",sans-serif!important;letter-spacing:-.065em;color:#1766c2}
.aist-trust-hero h1{margin:12px 0 0;font-size:clamp(34px,5vw,62px);line-height:1.18;letter-spacing:-.055em;font-weight:900}
.aist-trust-hero__mascot{display:flex;align-items:center;justify-content:center;position:relative}
.aist-trust-hero__mascot:before{content:"";position:absolute;width:290px;height:290px;border-radius:50%;background:#dff0d7;z-index:-1}
.aist-trust-hero__mascot .nobirun-svg{width:230px;filter:drop-shadow(0 14px 0 rgba(23,102,194,.07))}
.aist-trust-orbit{position:absolute;border:3px solid #1766c2;border-radius:50%;opacity:.14;z-index:-1}
.aist-trust-orbit--a{width:410px;height:410px;right:-160px;top:-130px}
.aist-trust-orbit--b{width:190px;height:190px;left:-80px;bottom:30px;border-color:#59a83b}
.aist-trust-marquee{position:relative;z-index:4;margin-top:62px;background:#1766c2;color:#fff;overflow:hidden;white-space:nowrap;transform:rotate(-1.2deg) scale(1.02);transform-origin:center}
.aist-trust-marquee span{display:block;padding:14px 0;font:800 18px/1 "Open Sans",sans-serif;letter-spacing:.13em;word-spacing:1.2em}

.aist-trust-content{max-width:1160px;margin:0 auto;padding:100px 28px 130px;display:grid;grid-template-columns:72px minmax(0,820px);justify-content:center;gap:48px}
.aist-trust-content__rail{display:flex;flex-direction:column;align-items:center;gap:18px}
.aist-trust-content__rail span{writing-mode:vertical-rl;font:800 11px/1 "Open Sans",sans-serif;letter-spacing:.22em;color:#1766c2}
.aist-trust-content__rail i{display:block;width:1px;min-height:180px;background:#1766c2;opacity:.4}
.aist-trust-article{font-size:18px;line-height:2.05}
.aist-trust-article>p:first-child{font-size:clamp(21px,2.4vw,29px);line-height:1.8;font-weight:700;letter-spacing:-.025em;margin:0 0 70px;max-width:760px}
.aist-trust-article h2{position:relative;margin:82px 0 28px;padding:28px 30px 28px 92px;border-radius:28px;background:#edf6e9;font-size:clamp(25px,3vw,34px);line-height:1.35;letter-spacing:-.035em}
.aist-trust-article{counter-reset:trustsection}
.aist-trust-article h2{counter-increment:trustsection}
.aist-trust-article h2:before{content:"0" counter(trustsection);position:absolute;left:28px;top:31px;font:800 16px/1 "Open Sans",sans-serif;color:#1766c2}
.aist-trust-article h2:after{content:"";position:absolute;left:62px;top:26px;width:3px;height:36px;background:#59a83b;border-radius:9px}
.aist-trust-article p{margin:0 0 1.55em}
.aist-trust-article a{color:#1766c2;text-decoration-thickness:1px;text-underline-offset:4px}
.aist-trust-article table{width:100%;border-collapse:separate;border-spacing:0;margin:40px 0;border:0}
.aist-trust-article tr{display:grid;grid-template-columns:180px 1fr;border-top:1px solid #cad8cc}
.aist-trust-article tr:last-child{border-bottom:1px solid #cad8cc}
.aist-trust-article th,.aist-trust-article td{padding:22px 12px;text-align:left;vertical-align:top;background:transparent;border:0}
.aist-trust-article th{font-weight:800;color:#1766c2}

.aist-trust-contact .aist-trust-article{max-width:820px}
.aist-trust-contact .aist-contact-form{position:relative;padding:42px;border-radius:36px;background:#edf6e9;box-shadow:16px 16px 0 #1766c2;margin-top:48px}
.aist-trust-contact .aist-contact-form input,.aist-trust-contact .aist-contact-form select,.aist-trust-contact .aist-contact-form textarea{border:2px solid transparent;border-radius:16px;background:#fffdf7;transition:.2s}
.aist-trust-contact .aist-contact-form input:focus,.aist-trust-contact .aist-contact-form select:focus,.aist-trust-contact .aist-contact-form textarea:focus{outline:0;border-color:#1766c2}
.aist-trust-contact .aist-contact-form button{min-width:190px;padding:18px 34px;box-shadow:6px 6px 0 #59a83b;transition:.15s}
.aist-trust-contact .aist-contact-form button:hover{transform:translate(3px,3px);box-shadow:3px 3px 0 #59a83b}

.aist-trust-company .aist-trust-hero__mascot:before{background:#e3efff}
.aist-trust-editorial-policy .aist-trust-hero__mascot:before{background:#fff0c8}
.aist-trust-privacy-policy .aist-trust-hero__mascot:before{background:#e6f4df}
.aist-trust-terms .aist-trust-hero__mascot:before{background:#f3e9ff}

@media(max-width:760px){
 .aist-trust-hero{min-height:auto;padding-top:54px}
 .aist-trust-hero__inner{grid-template-columns:1fr 120px;gap:10px}
 .aist-trust-en{font-size:clamp(38px,12vw,60px);margin-top:24px!important}
 .aist-trust-hero h1{font-size:clamp(30px,8vw,42px)}
 .aist-trust-hero__mascot:before{width:130px;height:130px}
 .aist-trust-hero__mascot .nobirun-svg{width:110px}
 .aist-trust-marquee{margin-top:45px}
 .aist-trust-content{grid-template-columns:1fr;padding:72px 20px 90px}
 .aist-trust-content__rail{display:none}
 .aist-trust-article{font-size:17px}
 .aist-trust-article>p:first-child{font-size:20px;margin-bottom:50px}
 .aist-trust-article h2{margin-top:58px;padding:24px 22px 24px 72px;border-radius:22px}
 .aist-trust-article h2:before{left:20px;top:28px}
 .aist-trust-article h2:after{left:52px;top:22px}
 .aist-trust-article tr{grid-template-columns:1fr}
 .aist-trust-article th{padding-bottom:2px}
 .aist-trust-article td{padding-top:6px}
 .aist-trust-contact .aist-contact-form{padding:25px 20px;border-radius:25px;box-shadow:8px 8px 0 #1766c2}
}

/* v2.4.1 screenshot-driven polish */
.aist-trust-hero{min-height:420px;padding-top:68px}.aist-trust-marquee{margin-top:40px}
.aist-trust-content{position:relative;padding-top:62px;padding-bottom:82px}
.aist-trust-content:after{content:"";position:absolute;right:-180px;bottom:80px;width:310px;height:310px;border:2px solid rgba(23,102,194,.10);border-radius:50%;pointer-events:none}
.aist-trust-article>p:first-child{font-size:clamp(23px,2.55vw,31px);line-height:1.72;margin-bottom:42px}
.aist-trust-article h2{margin-top:62px}
.aist-trust-company .aist-trust-article table{counter-reset:companyrow;margin-top:30px}
.aist-trust-company .aist-trust-article tr{counter-increment:companyrow;grid-template-columns:210px 1fr;position:relative;padding-left:44px}
.aist-trust-company .aist-trust-article tr:before{content:"0" counter(companyrow);position:absolute;left:4px;top:25px;font:800 11px/1 "Open Sans",sans-serif;letter-spacing:.08em;color:#59a83b}
.aist-trust-company .aist-trust-article th{font-size:15px;letter-spacing:.02em}
.aist-trust-company .aist-trust-article tr:nth-child(2) td{font-size:21px;font-weight:800;letter-spacing:-.02em}
.aist-trust-company .aist-trust-article:after{content:"LEARN / GROW / TRY";display:block;margin-top:72px;padding-top:18px;border-top:4px solid #1766c2;font:800 13px/1 "Open Sans",sans-serif;letter-spacing:.2em;color:#1766c2}
@media(max-width:760px){.aist-trust-hero{padding-top:42px}.aist-trust-marquee{margin-top:32px}.aist-trust-content{padding-top:48px;padding-bottom:66px}.aist-trust-article>p:first-child{font-size:20px;margin-bottom:34px}.aist-trust-company .aist-trust-article tr{grid-template-columns:1fr;padding:14px 0 14px 38px}.aist-trust-company .aist-trust-article tr:before{top:21px}.aist-trust-company .aist-trust-article tr:nth-child(2) td{font-size:19px}}

/* v2.5.0 sitemap */
.aist-trust-sitemap .aist-trust-hero__mascot:before{background:#fff0c8}
.aist-html-sitemap{margin-top:42px}
.aist-sitemap-group{padding:42px 0;border-top:1px solid #cad8cc}
.aist-sitemap-group:first-child{border-top:4px solid #1766c2}
.aist-sitemap-group__head{display:grid;grid-template-columns:64px 1fr;align-items:start;gap:18px;margin-bottom:26px}
.aist-sitemap-group__head>span{font:800 15px/1 "Open Sans",sans-serif;color:#59a83b;padding-top:9px}
.aist-sitemap-group__head h2,.aist-sitemap-category h3{margin:0;background:none!important;padding:0!important;border-radius:0!important;counter-increment:none!important}
.aist-sitemap-group__head h2:before,.aist-sitemap-group__head h2:after{display:none!important}
.aist-sitemap-group__head h2{font-size:clamp(30px,4vw,44px)}
.aist-sitemap-group__head a,.aist-sitemap-category a{text-decoration:none;color:#222426}
.aist-sitemap-group__head a:hover,.aist-sitemap-category a:hover{color:#1766c2}
.aist-sitemap-children{margin-left:82px}
.aist-sitemap-category{margin:28px 0}
.aist-sitemap-category h3{font-size:21px;border-left:5px solid #1766c2!important;padding-left:14px!important}
.aist-sitemap-children .aist-sitemap-children{margin:18px 0 18px 24px;padding-left:22px;border-left:1px solid #cad8cc}
.aist-sitemap-posts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 34px;margin:16px 0 0;padding:0;list-style:none}
.aist-sitemap-posts li{border-bottom:1px solid #e1e7df;padding:12px 0;line-height:1.55}
.aist-sitemap-posts li a{display:block;font-weight:700;font-size:15px}
@media(max-width:760px){
 .aist-sitemap-group__head{grid-template-columns:38px 1fr}
 .aist-sitemap-children{margin-left:0}
 .aist-sitemap-posts{grid-template-columns:1fr}
 .aist-sitemap-children .aist-sitemap-children{margin-left:8px;padding-left:14px}
}

/* v2.5.1 sitemap page-index anchors */
html{scroll-behavior:smooth}
.aist-sitemap-jump{margin:34px 0 54px;padding:26px 28px;border-radius:24px;background:#1766c2;color:#fff}
.aist-sitemap-jump>span{display:block;margin-bottom:16px;font:800 11px/1 "Open Sans",sans-serif;letter-spacing:.18em;opacity:.72}
.aist-sitemap-jump>div{display:flex;flex-wrap:wrap;gap:9px}
.aist-sitemap-jump a{display:inline-flex;align-items:center;min-height:38px;padding:8px 14px;border:1px solid rgba(255,255,255,.5);border-radius:999px;color:#fff!important;text-decoration:none!important;font-size:14px;font-weight:700}
.aist-sitemap-jump a:hover{background:#fff;color:#1766c2!important}
.aist-sitemap-jump a.is-child{background:rgba(255,255,255,.12)}
.aist-sitemap-group,.aist-sitemap-category{scroll-margin-top:110px}
@media(max-width:760px){.aist-sitemap-jump{padding:20px 18px;margin-bottom:38px}.aist-sitemap-jump>div{gap:7px}.aist-sitemap-jump a{font-size:13px;padding:7px 11px}.aist-sitemap-group,.aist-sitemap-category{scroll-margin-top:80px}}