/* Shared presentation; existing search, downloads and advertising behavior retained. */
:root{--ink:#192e43;--muted:#52677a;--accent:#165c72;--line:#d9e2e9;--paper:#fff;--wash:#f4f7fa}
body{color:var(--ink);background:var(--wash);font-family:"Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP",sans-serif;line-height:1.8}
h1,h2,h3,p,a{word-break:normal;overflow-wrap:break-word;line-break:strict}
h1,h2,h3{text-wrap:pretty;letter-spacing:0}
h1{font-family:inherit;font-size:36px;line-height:1.45;font-weight:700}h2{font-size:24px;line-height:1.5}h3{line-height:1.6}
p{margin:0 0 1em}.lead{font-size:17px;line-height:1.9;max-width:760px}main{max-width:1160px;padding:0 32px 64px}
.site-header,.site-footer{max-width:none;background:var(--paper);padding:24px 32px;display:block;color:var(--ink);border-color:var(--line)}
.site-header-inner,.site-footer-inner{max-width:1096px;margin:auto;display:flex;justify-content:space-between;gap:36px;align-items:center}
.site-brand-nav,.footer-info{flex:1;min-width:0}.brand{font-size:24px;letter-spacing:0;text-decoration:none;display:inline-block}.brand span{font-size:13px;color:var(--muted);letter-spacing:0;margin-top:5px;font-weight:500}
.site-header nav,.site-footer nav{display:flex;flex-wrap:wrap;gap:12px 20px;margin-top:20px;font-size:14px}.site-header nav a,.site-footer nav a{min-height:40px;display:flex;align-items:center;text-decoration:none}.site-header nav a:hover,.site-footer nav a:hover{text-decoration:underline;text-underline-offset:5px;color:var(--accent)}
.social-links{display:flex;gap:16px;flex-shrink:0}.social-qr{width:124px;text-decoration:none;display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;background:white;padding:5px;border:1px solid var(--line);border-radius:8px}.social-qr img{width:112px;height:112px;display:block;image-rendering:pixelated;max-width:none}.social-label{font-size:14px;font-weight:700;line-height:1.5}.social-description{display:block;font-size:11px;font-weight:400;color:var(--muted);margin-top:2px}
.hero{padding:52px 0 40px;max-width:none;margin-bottom:20px;border-bottom:1px solid var(--line)}.hero h1{font-size:40px;letter-spacing:0;margin-bottom:20px}.eyebrow{color:var(--accent);font-size:13px;letter-spacing:0}.hero-meta{margin-top:18px}.hero-meta span{border:0;background:#e6eef4;border-radius:4px;font-size:13px;color:var(--ink);padding:6px 12px}
section{margin-bottom:44px}.browse-index{margin-bottom:36px}.index-links{gap:10px}.index-links a{background:white;border-color:var(--line);padding:9px 18px;min-height:44px}.index-links a:hover{border-color:var(--accent);color:var(--accent)}
.filters{background:#e8eff5;border-radius:8px;padding:24px;border:1px solid var(--line)}input,select{border-color:#aabcca;color:var(--ink);border-radius:5px;font-size:15px}input:focus,select:focus{outline-color:var(--accent)}.count,.muted,.note{color:var(--muted)}
.unit-grid{gap:16px}.unit,.book{background:white;border:1px solid var(--line);border-radius:8px;padding:24px;box-shadow:none}.unit:hover{background:white;border-color:var(--accent)}.unit h3{font-size:18px;line-height:1.6;margin:10px 0 16px}.unit-arrow{color:var(--accent);padding-top:16px}.book p{font-size:14px;line-height:1.85}.books-grid{gap:18px}
.more{color:var(--accent);border-color:var(--accent);background:white}.download{border-color:var(--line);color:var(--ink);background:white;align-items:flex-start}.download:hover{border-color:var(--accent)}.download small{color:var(--muted)}.textlink{color:var(--accent)}.membership{background:#e8eff5;border-radius:8px}.explain{max-width:850px;border-color:var(--line)}.sources{line-height:1.9}.sources a{overflow-wrap:anywhere}.prose{max-width:800px}.site-footer{padding-top:32px;padding-bottom:32px}.footer-info p{font-size:13px;max-width:440px;margin-top:16px;color:var(--muted)}.site-footer small{color:var(--muted);margin-top:16px}
@media(max-width:960px){.site-header-inner,.site-footer-inner{gap:20px}.brand{font-size:22px}.site-header nav{gap:6px 14px}.social-links{gap:10px}}
@media(max-width:760px){main{padding:0 20px 44px}.site-header,.site-footer{padding:20px}.site-header-inner,.site-footer-inner{display:block}.brand{font-size:23px}.site-header nav,.site-footer nav{gap:8px 18px;margin-top:14px;font-size:14px}.social-links{justify-content:flex-start;gap:12px;margin-top:16px}.social-qr{width:124px}.hero{padding:32px 0 26px}.hero h1{font-size:30px;line-height:1.5}.lead{font-size:16px;line-height:1.9}h1{font-size:28px}h2{font-size:23px}.filters{padding:18px;grid-template-columns:1fr 1fr}.unit-grid,.books-grid,.downloads{grid-template-columns:1fr}.unit,.book{padding:22px}.download{display:block}.download small{white-space:normal;margin-top:8px}.site-footer-inner .social-links{margin-top:22px}.hero-meta{gap:8px}.hero-meta span{font-size:12px}.prose p{font-size:16px}}
@media(max-width:359px){main,.site-header,.site-footer{padding-left:12px;padding-right:12px}.social-links{gap:8px}.social-qr{width:120px;padding:3px}}

.keep-phrase{white-space:nowrap}