/* Shared small-screen layouts. Wide code and tables scroll within their own box. */
.mobile-menu{display:none}.post-picker>summary{display:none}.post-picker{min-width:0}
.mobile-toc{display:none}.field-grid>*{min-width:0}
.tools-menu>summary{display:none}.tools-content{display:flex;flex-direction:column;gap:10px}
@media(max-width:1000px) and (min-width:761px){
  body:not(.reading-page):not(.admin-page) .layout{grid-template-columns:1fr;max-width:860px}
  body:not(.reading-page):not(.admin-page) .layout>aside{display:none}
}
@media(max-width:950px){
  .mobile-toc{display:block;margin:24px 0 30px;border:1px solid var(--line);border-radius:10px;background:#ac82d309}
  .mobile-toc summary{cursor:pointer;min-height:48px;padding:11px 16px;font-size:13px;color:var(--accent)}
  .mobile-toc .toc-links{display:grid;padding:0 16px 16px;gap:3px;max-height:50svh;overflow:auto;overscroll-behavior:contain}
  .mobile-toc a{padding:10px 0;border-top:1px solid var(--line);font-size:13px;line-height:1.7;overflow-wrap:anywhere}
}
@media(max-width:760px){
  html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-bottom:90px}
  body{min-width:0}
  header{height:68px;padding-left:max(18px,env(safe-area-inset-left));padding-right:max(18px,env(safe-area-inset-right))}
  header>.brand{font-size:26px;white-space:nowrap}
  header nav{gap:8px;min-width:0}
  header nav>a{display:inline-flex;min-height:44px;align-items:center;padding:0 6px;font-size:13px}
  header nav button{width:44px;height:44px;flex-shrink:0;font-size:19px}
  header nav .optional{display:none}
  .mobile-menu{display:block;position:relative;color:inherit}
  .mobile-menu summary{display:grid;place-items:center;width:44px;height:44px;border:1px solid #d6afea38;border-radius:11px;list-style:none;cursor:pointer;font-size:21px}
  .mobile-menu summary::-webkit-details-marker{display:none}
  .mobile-menu[open] summary{background:#ac82d326}
  .mobile-menu .menu-links{position:absolute;right:0;top:54px;z-index:30;width:min(280px,calc(100vw - 36px));padding:10px;background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:14px;box-shadow:0 12px 40px #06071638;backdrop-filter:blur(20px)}
  .mobile-menu .menu-links a{display:flex;align-items:center;padding:10px 15px;min-height:48px;border-radius:8px;font-size:14px}
  .mobile-menu .menu-links a:hover,.mobile-menu .menu-links a:focus-visible{background:#ac82d31a;color:var(--accent)}
  .hero{height:86svh;min-height:500px;max-height:820px}
  .hero .intro{padding:84px 18px 100px;width:100%;min-width:0}
  .hero .intro h1{font-size:clamp(80px,24vw,112px);letter-spacing:-4px;margin:20px 0}
  .hero .intro p{font-size:clamp(14px,3.8vw,17px);letter-spacing:3px;line-height:2}
  .hero .intro small{font-size:11px;letter-spacing:1px;line-height:2}
  .hero .eyebrow{font-size:9px;letter-spacing:3px}
  .hero .scroll-cue{bottom:60px;min-width:60px;min-height:44px;left:calc(50% - 30px)}
  .layout{padding:0 16px;margin-top:24px;grid-template-columns:minmax(0,1fr)}
  .layout>main{min-width:0}
  .notice{padding:14px 16px;align-items:flex-start;gap:10px;line-height:1.8}
  .notice a{overflow-wrap:anywhere;font-size:12px}
  .featured{gap:12px;margin:20px 0}
  .feature{min-width:0;min-height:125px;padding:18px 14px}
  .feature small{font-size:8px;letter-spacing:1px;display:block;line-height:1.8}
  .feature strong{font-size:19px;letter-spacing:2px}
  .feature span{display:block;font-size:10px;line-height:1.7;padding-right:8px}
  .feature i{right:12px;bottom:14px;font-size:18px}
  .toolbar{display:grid;grid-template-columns:1fr;gap:16px;margin:26px 0 16px}
  .toolbar h2{font-size:23px}.toolbar small{font-size:9px;line-height:1.7}
  #search{width:100%;min-height:48px;font-size:16px;padding:11px 15px}
  .filters{max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;gap:8px;padding:2px 0 9px;margin-bottom:12px;scrollbar-width:thin}
  .filters button{flex:0 0 auto;min-height:44px;padding:8px 16px;font-size:13px}
  .story{min-width:0;margin:18px 0;border-radius:14px;grid-template-columns:1fr}
  .story .story-cover{min-height:0;aspect-ratio:16/9}
  .story .story-body{min-width:0;padding:20px}
  .story h3{font-size:19px;line-height:1.6;overflow-wrap:anywhere}
  .story p{font-size:14px;line-height:1.85;margin-bottom:14px}
  .story .meta{font-size:11px}.story .end{gap:14px}
  .story .read{display:flex;min-height:44px;align-items:center;font-size:13px}
  .story .tag{font-size:12px}
  .float-tools{right:max(12px,env(safe-area-inset-right));bottom:calc(12px + env(safe-area-inset-bottom));flex-direction:row;gap:7px}
  .float-tools button{width:44px;height:44px;font-size:17px;border-radius:12px}
  .tools-menu{position:relative}
  .tools-menu>summary{display:grid;place-items:center;list-style:none;cursor:pointer;width:44px;height:44px;font-size:20px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--accent);box-shadow:0 4px 15px #05061128;backdrop-filter:blur(16px)}
  .tools-menu>summary::-webkit-details-marker{display:none}
  .tools-menu .tools-content{position:absolute;right:0;bottom:54px;flex-direction:column;gap:8px}
  footer{padding:24px 20px calc(90px + env(safe-area-inset-bottom));margin-top:30px;gap:12px;justify-content:center;text-align:center;flex-wrap:wrap;font-size:11px}
  .reading-page header{padding:0 16px;height:68px}
  .reading-page header nav>a{display:none}
  .article-layout{padding:0 12px;margin:18px auto;gap:0}
  .article-content{padding:24px 18px;border-radius:13px;max-width:100%}
  .article-content h1{font-size:clamp(23px,6vw,29px);line-height:1.5;overflow-wrap:anywhere}
  .article-meta{font-size:12px;line-height:1.8;margin-top:24px}
  .article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
  .article-tags .tag{font-size:12px}
  .prose{min-width:0;font-size:16px;line-height:1.95}
  .prose p{line-height:1.95}
  .prose h2{font-size:23px;line-height:1.6;margin:32px 0 16px}
  .prose h3{font-size:19px;line-height:1.65}
  .prose pre{max-width:100%;margin:20px 0;font-size:13px;line-height:1.7;padding:54px 14px 18px;white-space:pre;overflow-wrap:normal;word-break:normal;overscroll-behavior-x:contain}
  .prose table{max-width:100%;font-size:13px;overscroll-behavior-x:contain}
  .prose td,.prose th{min-width:95px;padding:9px 12px}
  .prose img{max-width:100%;object-fit:contain}
  .prose blockquote{padding:1px 14px;margin:20px 0}
  .prose .katex-display{max-width:100%;overscroll-behavior-x:contain;font-size:.95em}
  .prose ul,.prose ol{padding-left:22px}
  .copy-code{min-height:40px;top:5px;right:7px;font-size:12px;padding:8px 12px}
  .article-bottom{flex-direction:column;gap:12px;overflow-wrap:anywhere}
  .article-bottom a{display:flex;align-items:center;min-height:44px;font-size:13px}
}
@media(max-width:900px){
  .admin-page header{height:66px;padding:0 max(16px,env(safe-area-inset-right)) 0 max(16px,env(safe-area-inset-left))}
  .admin-page header>.brand{font-size:24px}.admin-page .brand small{display:none}
  .admin-page header nav>a{font-size:12px;min-height:44px;display:flex;align-items:center;padding:0 5px}
  .admin-page header nav{gap:8px}.admin-page header nav button{width:44px;height:44px}
  .workspace{display:block;max-width:760px;margin:auto}
  .post-sidebar{position:relative;height:auto;max-height:none;padding:18px 18px 12px;border-right:0;border-bottom:1px solid var(--line);overflow:visible}
  .post-sidebar h1{display:none}.private-badge{font-size:10px;margin-bottom:6px}
  #counts{display:inline-block;max-width:calc(100% - 140px);margin:12px 0;font-size:11px;line-height:1.8}
  .post-sidebar #new-post{float:right;width:126px;min-height:44px;padding:8px 10px;margin:4px 0 12px;font-size:13px}
  .post-picker{clear:both;border:1px solid var(--line);border-radius:9px;background:var(--card)}
  .post-picker>summary{display:flex;align-items:center;justify-content:space-between;gap:15px;min-height:48px;padding:11px 14px;cursor:pointer;list-style:none;font-size:13px;color:var(--accent)}
  .post-picker>summary::-webkit-details-marker{display:none}
  .post-picker>summary:after{content:'＋';font-size:18px}.post-picker[open]>summary:after{content:'−'}
  .picker-body{padding:0 12px 12px}.post-sidebar select{margin-bottom:10px}
  #post-list{max-height:min(320px,45svh);overflow:auto;overscroll-behavior:contain}
  .post-row{min-height:60px;padding:12px}.post-row strong{font-size:13px}
  .sidebar-foot{display:none}.field-grid{grid-template-columns:1fr;gap:0}
  .editor{padding:24px 18px calc(110px + env(safe-area-inset-bottom))}
  .editor-top{gap:14px;margin-bottom:22px;display:block}
  .editor-top>div:first-child{min-width:0;max-width:100%}
  .editor h2{font-size:20px;line-height:1.6;overflow-wrap:anywhere}
  #save-status{font-size:12px;overflow-wrap:anywhere;line-height:1.8}
  .editor .editor-actions{position:fixed;z-index:15;bottom:0;left:0;right:0;display:grid;grid-template-columns:.8fr 1.1fr 1.2fr;gap:9px;width:auto;padding:12px max(14px,env(safe-area-inset-right)) calc(12px + env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left));background:var(--card);border-top:1px solid var(--line);box-shadow:0 -8px 28px #05061118;backdrop-filter:blur(20px)}
  .editor-actions button{min-width:0;min-height:46px;padding:9px 8px;font-size:13px}
  .admin-page.keyboard-open .editor-actions{visibility:hidden;pointer-events:none}
  .admin-page .field{font-size:13px;margin-bottom:20px}
  .admin-page .field small{font-size:11px;overflow-wrap:anywhere;line-height:1.8}
  .admin-page input,.admin-page select,.admin-page textarea{font-size:16px;min-height:46px;padding:11px 13px}
  .admin-page #title{font-size:20px;padding:13px}
  .writing-toolbar{display:grid;gap:8px;padding:10px 12px}
  .tabs{display:grid;grid-template-columns:1fr 1fr;gap:12px}
  .tabs button{min-height:44px;font-size:13px}
  .upload-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .file-button{display:flex;align-items:center;justify-content:center;min-height:44px;padding:8px 4px;font-size:12px;border:1px solid var(--line)}
  .admin-page #markdown{font-size:16px;line-height:1.85;padding:18px 14px;min-height:55svh;tab-size:2}
  .admin-page #preview{padding:18px 14px;min-height:55svh;max-height:none;overflow-wrap:anywhere}
  .editor-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;margin:14px 0 20px;font-size:11px;line-height:1.8}
  .editor-bottom>span:nth-child(2){display:none}.editor-bottom a{min-height:44px;display:flex;align-items:center}
  .error{position:relative;font-size:13px;line-height:1.8;scroll-margin-top:20px}
}
@media(max-width:360px){header nav{gap:3px}body:not(.reading-page):not(.admin-page) header nav>a{display:none}.feature span{font-size:9px}.story .story-body{padding:18px}.admin-page header>.brand{font-size:22px}}
@media(max-height:500px) and (min-width:560px){.hero{height:100svh;min-height:360px}.hero .intro{padding:80px 18px 70px}.hero .intro h1{font-size:76px;margin:8px 0}.hero .intro small{margin-top:8px}.hero .scroll-cue{bottom:30px}}
@media(prefers-reduced-motion:reduce){.mobile-menu .menu-links{backdrop-filter:none}}