:root{--hub-red:#ad2937;--hub-ink:#252c37;--hub-muted:#626e7e;--hub-line:#e4e8ee;color-scheme:light;font-family:Arial,"Noto Sans JP","Microsoft YaHei","Yu Gothic",Meiryo,sans-serif;color:var(--hub-ink);background:#f5f7fa;font-size:16px;line-height:1.6}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,select{font:inherit}a,select{touch-action:manipulation}a:focus-visible,select:focus-visible{outline:3px solid var(--hub-red);outline-offset:5px}.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}.skip-link{position:fixed;top:-100px;left:16px;z-index:10;padding:12px 20px;background:#fff;border:2px solid var(--hub-red)}.skip-link:focus{top:12px}.hub-shell{min-height:100dvh}
.hub-header{min-height:96px;padding:16px 40px;display:flex;justify-content:space-between;align-items:center;gap:24px;background:#fff;border-bottom:1px solid var(--hub-line)}.hub-brand{display:flex;align-items:center;gap:24px;min-width:0}.hub-logo{width:126px;height:64px;position:relative;overflow:hidden;flex-shrink:0}.hub-logo img{position:absolute;width:145px;height:145px;max-width:none;top:-45px;left:-8px}.hub-brand-rule{height:44px;width:1px;background:#dce1e8;flex-shrink:0}.hub-brand strong{display:block;font-size:1.4375rem;letter-spacing:.02em;line-height:1.3}.hub-brand small{display:block;color:var(--hub-muted);font-size:.875rem;margin-top:5px}.language-select{display:flex;align-items:center;gap:10px;flex-shrink:0;color:#495463;font-size:.875rem}.language-select>span:first-child{font-weight:600}.language-select select{min-height:44px;padding:8px;background:#fff;color:inherit;border:1px solid var(--hub-line);border-radius:5px;cursor:pointer}
.hub-layout{display:grid;grid-template-columns:220px minmax(0,1fr);min-height:calc(100dvh - 97px)}.hub-sidebar{display:flex;flex-direction:column;justify-content:space-between;padding:30px 12px 26px;background:#fff;border-right:1px solid var(--hub-line);gap:32px}.hub-sidebar a{display:flex;align-items:center;gap:15px;padding:14px 20px;min-height:52px;border-radius:7px;font-size:.9375rem}.hub-sidebar a.active{background:#f8edf0;color:var(--hub-red);font-weight:600}.hub-sidebar a:hover{background:#f6f1f2}.hub-sidebar svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;flex-shrink:0}.company-link{color:var(--hub-muted)}.hub-main{width:100%;max-width:1440px;padding:34px 48px;display:flex;flex-direction:column;min-width:0}.hub-main:focus{outline:none}.hub-breadcrumb{font-size:.875rem;color:var(--hub-muted)}.hub-breadcrumb>span:first-child{margin:0 12px;color:#84909f}.hub-welcome{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:30px 0 48px}.hub-welcome h1{font-size:2rem;line-height:1.4;margin:0 0 8px;font-weight:650;overflow-wrap:anywhere}.hub-welcome p{color:var(--hub-muted);margin:0}.hub-welcome time{font-size:.875rem;color:var(--hub-muted);text-align:right}.section-heading{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:18px}.section-heading h2{font-size:1.375rem;margin:0;font-weight:600}.section-caption{font-size:.875rem;color:var(--hub-muted)}.hub-empty{background:#fff;border:1px solid var(--hub-line);border-radius:10px;box-shadow:0 4px 16px #20324b07;padding:60px 32px 64px;text-align:center;min-height:300px}.app-symbol{display:grid;place-items:center;margin:0 auto 20px;width:56px;height:56px;border-radius:10px;color:var(--hub-red);background:#f8edf0}.app-symbol svg{width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:1.5}.hub-empty h3{font-size:1.25rem;font-weight:600;margin:0 0 8px}.hub-empty p{color:var(--hub-muted);margin:0}.hub-footer{display:flex;justify-content:space-between;gap:16px;margin-top:auto;padding-top:22px;border-top:1px solid var(--hub-line);font-size:.875rem;color:var(--hub-muted)}.hub-apps{margin-bottom:64px}
@media(min-width:1600px){.hub-main{padding:44px 64px}.hub-layout{grid-template-columns:240px minmax(0,1fr)}}
@media(max-width:1100px){.hub-header{padding:16px 24px}.hub-layout{grid-template-columns:180px minmax(0,1fr)}.hub-main{padding:28px}.hub-sidebar a{padding:12px}.hub-welcome{align-items:flex-start}.hub-welcome h1{font-size:1.75rem}}
@media(max-width:760px){.hub-header{min-height:88px;flex-wrap:wrap;padding:18px 20px;gap:16px}.hub-brand{gap:12px}.hub-logo{width:84px;height:44px}.hub-logo img{width:96px;height:96px;top:-29px;left:-6px}.hub-brand-rule{height:36px}.hub-brand strong{font-size:1.1875rem}.hub-brand small{font-size:.875rem}.language-select{margin-left:auto}.hub-layout{display:block;min-height:0}.hub-sidebar{padding:10px 16px;border-right:0;border-bottom:1px solid var(--hub-line);flex-direction:row;flex-wrap:wrap;gap:8px}.hub-sidebar a{padding:8px 12px;min-height:44px;font-size:.875rem;gap:8px}.hub-main{padding:24px 20px;min-height:70dvh}.hub-welcome{display:block;margin:24px 0 32px}.hub-welcome h1{font-size:1.625rem}.hub-welcome time{display:block;text-align:left;margin-top:14px}.section-heading{flex-wrap:wrap;gap:6px}.hub-empty{padding:42px 20px;min-height:270px}.hub-apps{margin-bottom:40px}.hub-footer{flex-wrap:wrap}}
@media(max-width:380px){.hub-brand{gap:9px}.hub-logo{width:84px}.hub-brand-rule{display:none}.hub-header{padding:16px}.hub-main{padding:24px 16px}}
/* Reference layout: spacious portal, split application card. */
.hub-main{max-width:none;padding:36px 48px}.hub-welcome{margin:30px 0 54px}.hub-welcome h1{font-size:2rem}.section-heading{display:block;margin-bottom:20px}.section-heading h2{font-size:1.5rem;margin-bottom:4px}.hub-app-card{display:grid;grid-template-columns:1fr 1fr;background:#fff;border:1px solid #e9edf1;border-radius:10px;box-shadow:0 4px 16px #20324b07;overflow:hidden}.hub-app-content{padding:30px 32px 36px}.hub-app-symbol{display:flex;align-items:center;gap:20px;margin-bottom:22px}.hub-app-symbol>span{display:grid;place-items:center;width:54px;height:54px;background:#e7f4f2;color:#128a89;border-radius:7px}.hub-app-symbol svg{width:27px;height:27px;fill:none;stroke:currentColor;stroke-width:1.8}.hub-app-symbol small{font-size:.875rem;color:#65717c;background:#f0f3f5;padding:3px 12px;border-radius:20px}.hub-app-content h3{font-size:1.5rem;line-height:1.5;margin:0 0 7px;font-weight:650}.hub-app-content>p{font-size:1rem;color:#637083;margin:0 0 16px}.hub-app-features{font-size:.875rem;color:#687689;margin-bottom:30px}.hub-primary{display:inline-flex;align-items:center;justify-content:center;min-width:146px;min-height:46px;padding:10px 24px;background:var(--hub-red);color:#fff;border:1px solid var(--hub-red);border-radius:5px;font:inherit;font-weight:600}.hub-primary:disabled{cursor:not-allowed;background:#994552;border-color:#994552}.hub-app-note{display:block;font-size:.875rem;color:#687689;margin-top:8px}.hub-app-art{min-width:0;min-height:350px;background:#e9f4f1}.hub-app-art img{width:100%;height:100%;display:block;object-fit:cover}.hub-more{font-size:.875rem;color:#687689;margin:24px 0 0}.hub-sidebar nav{display:grid;gap:10px}.hub-footer{margin-top:auto}
@media(min-width:1600px){.hub-header{padding:20px 40px;min-height:104px}.hub-layout{grid-template-columns:240px minmax(0,1fr);min-height:calc(100dvh - 105px)}.hub-main{padding:40px 52px}.hub-welcome{margin-bottom:60px}.hub-app-content{padding:34px 36px 44px}.hub-app-art{min-height:390px}}
@media(max-width:1100px){.hub-main{padding:28px}.hub-app-content{padding:24px}.hub-app-content h3{font-size:1.3125rem}.hub-app-art{min-height:330px}}
@media(max-width:760px){.hub-sidebar nav{display:flex;flex-wrap:wrap;gap:6px}.hub-main{padding:24px 20px}.hub-welcome{margin:24px 0 32px}.hub-welcome h1{font-size:1.625rem}.hub-app-card{grid-template-columns:1fr}.hub-app-art{height:180px;min-height:0;grid-row:1}.hub-app-content{padding:24px}.hub-app-features{margin-bottom:24px}.hub-more{margin-top:20px}}
/* Long Japanese labels and enlarged text must wrap inside the portal. */
.hub-brand>span:last-child,.hub-welcome>div,.hub-app-content{min-width:0}.hub-brand small,.hub-app-content h3,.hub-app-content>p,.hub-app-features{overflow-wrap:anywhere}.hub-sidebar a{line-height:1.6}.hub-welcome time{flex-shrink:0}.hub-footer>span{overflow-wrap:anywhere}#apps-title{scroll-margin-top:24px}#apps-title:focus-visible{outline:2px solid var(--hub-red);outline-offset:6px}
@media(max-width:1100px){.hub-welcome{flex-wrap:wrap}.hub-welcome time{text-align:left}}
@media(max-width:380px){.hub-header{padding:16px 12px}.hub-brand{width:100%}.hub-brand strong{font-size:1.125rem}.hub-brand small{font-size:.875rem}.hub-app-content{padding:22px 18px}}
.auth-page{max-width:1140px;margin:0 auto;padding:80px 32px;display:grid;grid-template-columns:1fr 420px;align-items:center;gap:80px;min-height:calc(100dvh - 100px)}.auth-kicker{color:var(--hub-red);font-weight:600}.auth-story h1{font-size:2.25rem;line-height:1.5}.auth-story>p,.auth-story>a{color:var(--hub-muted)}.auth-card{padding:36px;border:1px solid var(--hub-line);border-radius:10px;background:white}.auth-card h2{margin:0 0 12px}.auth-card p{color:var(--hub-muted)}.auth-card .hub-primary{width:100%;margin:12px 0}.auth-help{font-size:.875rem}.hub-employee{display:flex;align-items:center;gap:10px}.hub-avatar{display:grid;place-items:center;width:36px;height:36px;background:var(--hub-red);color:white;border-radius:50%}.hub-employee button{border:0;background:transparent;color:var(--hub-red);min-height:44px;cursor:pointer;font:inherit}.hub-header .language-select{margin-left:auto}
@media(max-width:760px){.auth-page{display:block;padding:32px 20px}.auth-story{margin-bottom:32px}.auth-story h1{font-size:1.75rem}.auth-card{padding:26px}.hub-employee{flex-wrap:wrap}.hub-header .language-select{margin-left:0}}

/* Native disclosure keeps category navigation keyboard and touch accessible. */
.nav-group summary{display:flex;align-items:center;gap:15px;padding:14px 20px;min-height:52px;border-radius:7px;font-size:.9375rem;cursor:pointer;list-style:none;touch-action:manipulation}.nav-group summary::-webkit-details-marker{display:none}.nav-group summary:hover{background:#f6f1f2}.nav-group summary:focus-visible{outline:3px solid var(--hub-red);outline-offset:2px}.nav-group summary>span{min-width:0;overflow-wrap:anywhere}.nav-group .nav-chevron{width:16px;height:16px;margin-left:auto}.nav-group[open] .nav-chevron{transform:rotate(180deg)}.nav-group[open] summary{color:var(--hub-red)}.nav-children{margin:6px 0 0 29px;padding-left:9px;border-left:1px solid var(--hub-line)}.hub-sidebar .nav-children a{padding:10px 12px;font-size:.875rem;min-height:44px}
@media(max-width:1100px){.nav-group summary{padding:12px;gap:10px}.nav-children{margin-left:21px}}
@media(max-width:760px){.nav-group summary{padding:8px 12px;min-height:44px;font-size:.875rem;gap:8px}.nav-group{min-width:160px}.nav-children{margin-left:21px}}