/* 会員サイトのsite.cssと共通の配色・書体・PC左メニュー/モバイル上メニュー。 */
@font-face{font-family:"Zen Kaku Gothic New";font-style:normal;font-weight:400;font-display:swap;src:url("/fonts/ZenKakuGothicNew-Regular.woff2") format("woff2")}
@font-face{font-family:"Zen Kaku Gothic New";font-style:normal;font-weight:700;font-display:swap;src:url("/fonts/ZenKakuGothicNew-Bold.woff2") format("woff2")}
@font-face{font-family:"Zen Kaku Gothic Antique";font-style:normal;font-weight:700;font-display:swap;src:url("/fonts/ZenKakuGothicAntique-Bold.woff2") format("woff2")}
:root{--paper:#fff;--ink:#0b0b0b;--text:#0b0b0b;--muted:#303030;--line:#dedede;--accent:#111;--pale:#f6f6f6;--sans:"Zen Kaku Gothic New","Yu Gothic",sans-serif;--serif:"Zen Kaku Gothic Antique","Zen Kaku Gothic New",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:130px}
body{margin:0;font:400 15px/1.9 var(--sans);letter-spacing:.015em;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;touch-action:manipulation}
a:focus-visible{outline:2px solid var(--ink);outline-offset:5px}
h1,h2,p{margin:0}
h1,h2{font-family:var(--serif);font-weight:700;line-height:1.6;letter-spacing:.025em;word-break:keep-all;overflow-wrap:anywhere}
h1{font-size:44px;line-height:1.65}
h2{font-size:26px}
.shell{width:min(1280px,calc(100% - 112px));margin-inline:auto}
.app-main{min-width:0}
.site-sidebar{display:none}
.brand{display:inline-flex;flex-direction:column;flex:none;align-items:flex-start}
.brand-name{font-family:var(--serif);font-size:20px;font-weight:700;letter-spacing:.015em;line-height:1.4;white-space:nowrap}
.brand-domain{font-size:11px;font-weight:400;color:var(--muted);margin-top:8px}
.sidebar-nav{display:grid;gap:2px}
.sidebar-nav a{display:flex;align-items:center;min-height:42px;padding:8px 12px;border-radius:8px;font-size:14px;font-weight:700}
.sidebar-nav a:hover{background:var(--pale)}
.sidebar-nav a[aria-current="page"]{background:var(--ink);color:#fff}
.sidebar-foot{margin-top:auto;padding:12px;font-size:12px;color:var(--muted)}
.site-header{position:sticky;top:0;z-index:10;border-bottom:1px solid #e8e8e8;background:#fffffff2;backdrop-filter:blur(16px)}
.header-inner{display:flex;flex-direction:column;align-items:stretch;gap:0;padding-top:16px}
.nav-links{display:flex;align-items:center;justify-content:space-between;gap:18px;font-size:13px;font-weight:700}
.nav-links a{position:relative;display:inline-flex;align-items:center;min-height:48px;white-space:nowrap}
.nav-links a::after{content:"";position:absolute;right:0;bottom:5px;left:0;height:2px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .2s}
.nav-links a:hover::after,.nav-links a:focus-visible::after,.nav-links a[aria-current="page"]::after{transform:scaleX(1)}
.skip-link{position:fixed;left:12px;top:-80px;background:#fff;z-index:20;padding:12px}
.skip-link:focus{top:12px}
.preview-notice{padding:9px 24px;background:#f6f6f6;color:var(--muted);text-align:center;font-size:12px;border-bottom:1px solid var(--line)}
.hero{display:grid;grid-template-columns:1.05fr 1fr;align-items:start;gap:70px;padding:100px 0 100px}
.eyebrow{font-size:12px;color:var(--muted);margin-bottom:18px}
.lead{font-size:15px;line-height:2.3;color:var(--muted);margin-top:24px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:20px;min-height:48px;padding:10px 23px;border:1px solid var(--accent);border-radius:40px;background:var(--accent);color:#fff;font-size:13px;font-weight:700;line-height:1.8;text-align:center}
.primary{margin-top:30px}
.primary:hover{background:#303030}
.entry-note{font-size:12px;color:var(--muted);margin-top:15px}
.guide-card{background:#fafafa;border:1px solid #e5e5e5;border-radius:10px;padding:26px 28px}
.guide-top{display:flex;align-items:center;gap:13px;font-weight:700;padding-bottom:22px;border-bottom:1px solid var(--line)}
.guide-icon{display:grid;place-items:center;width:34px;height:34px;border:1px solid var(--line);border-radius:50%;font-size:20px}
.guide-item{display:flex;gap:15px;padding-top:23px;align-items:flex-start}
.guide-item h2{font-size:20px;line-height:1.5}
.guide-item p{font-size:13px;color:var(--muted);margin-top:4px}
.item-icon{flex:0 0 27px;font-size:21px;line-height:1.5}
.access-section{border-top:1px solid var(--line);padding:44px 0 50px;display:grid;grid-template-columns:1fr 1.1fr;gap:60px}
.access-section h2{margin-bottom:16px}
.access-section p{font-size:14px}
.access-details p+p{margin-top:16px}
.muted{color:var(--muted)}
.contact-panel{display:flex;align-items:center;justify-content:space-between;gap:24px;border:1px solid var(--line);background:#fafafa;padding:25px 28px;margin:0 0 60px}
.contact-panel h2{font-size:20px}
.contact-panel p{font-size:13px;margin-top:6px}
.contact-link{overflow-wrap:anywhere;font-size:14px;min-width:0;border-bottom:1px solid var(--ink)}
.site-footer{border-top:1px solid var(--line);padding:42px 0 48px;display:flex;justify-content:space-between;gap:30px;font-size:12px}
.site-footer p{font-family:var(--serif);font-weight:700}
.site-footer p span{display:block;font-family:var(--sans);color:var(--muted);font-weight:400;margin-top:8px}
.site-footer div{display:flex;align-items:flex-end;gap:24px;flex-wrap:wrap}
.site-footer a{color:var(--muted)}
.document{max-width:860px;padding-top:60px}
.back-link{display:inline-block;font-size:13px;font-weight:700;margin-bottom:40px}
.document h1{font-size:40px}
.document .lead{margin-top:18px}
.prose{margin:46px 0 60px;line-height:2.3;overflow-wrap:anywhere}
.prose section{margin-top:36px}
.prose h2{font-size:26px;margin-bottom:18px}
.prose p+p{margin-top:16px}
.prose p{font-size:15px}
.prose a{border-bottom:1px solid}
.update-note{font-size:12px;color:var(--muted);margin:-34px 0 40px}
@media(min-width:1024px){.app-shell{display:grid;grid-template-columns:248px minmax(0,1fr)}.site-sidebar{position:sticky;top:0;display:flex;flex-direction:column;gap:28px;height:100vh;overflow-y:auto;padding:28px 16px 24px;border-right:1px solid #e8e8e8;background:#fff}.site-sidebar>.brand{padding:0 12px}.site-header{display:none}}
@media(max-width:1200px){.hero{gap:40px}.access-section{gap:35px}.wide-only{display:none}}
@media(max-width:1023px){.hero{grid-template-columns:1fr;gap:36px;padding:70px 0}.hero-copy{max-width:700px}.access-section{grid-template-columns:1fr;gap:24px}}
@media(max-width:600px){.shell{width:calc(100% - 40px)}.brand-name{font-size:18px}.brand-domain{font-size:10px;margin-top:4px}.header-inner{padding-top:14px}.nav-links{gap:8px;font-size:12px}.nav-links a{min-height:44px}.preview-notice{font-size:11px;text-align:left;padding:9px 20px}.hero{padding:48px 0 60px;gap:28px}h1{font-size:31px}.eyebrow{font-size:12px;margin-bottom:14px}.lead{font-size:13px;margin-top:18px}.button{font-size:12px}.entry-note{font-size:11px}.guide-card{padding:22px}.guide-item h2{font-size:18px}.guide-item p{font-size:12px}.access-section{padding:32px 0}.access-section h2{font-size:23px}.access-section p{font-size:13px}.contact-panel{flex-direction:column;align-items:flex-start;padding:22px;margin-bottom:40px;gap:15px}.contact-panel h2{font-size:18px}.contact-link{font-size:13px}.site-footer{flex-direction:column;padding:34px 0;gap:20px}.site-footer div{gap:24px}.document{padding-top:35px}.back-link{margin-bottom:30px}.document h1{font-size:31px}.prose{margin:32px 0 42px}.prose section{margin-top:28px}.prose h2{font-size:23px}.prose p{font-size:14px}.update-note{margin-top:-16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.nav-links a::after{transition:none}}