.shared-header,.shared-footer{background:#f5f3ed;color:#242723;font-family:'Hiragino Kaku Gothic ProN','Yu Gothic',Meiryo,sans-serif;clear:both}
.shared-header *,.shared-footer *{box-sizing:border-box}
.shared-shell{max-width:1200px;padding:0 40px;margin:0 auto}
.container>.shared-header .shared-shell,.container>.shared-footer .shared-shell{padding:0}
.shared-masthead{display:flex;justify-content:space-between;align-items:center;padding:34px 0 27px;border-bottom:1px solid #242723;gap:20px}
.shared-header .shared-title{margin:0;padding:0;border:0;background:none;font:inherit;box-shadow:none}
.shared-header .shared-brand{color:#242723;text-decoration:none;font:700 34px/1.5 'Yu Mincho','Hiragino Mincho ProN',serif;letter-spacing:.08em;display:flex;align-items:center;gap:13px}
.shared-mark{display:block;flex:0 0 28px;width:28px;height:28px;border:1px solid #b75432;border-radius:50%;position:relative;background:linear-gradient(90deg,transparent 49%,#b75432 50%)}
.shared-mark:after{content:'';position:absolute;inset:6px;border:1px solid #f5f3ed;border-radius:50%}
.shared-header .shared-nav{display:flex;gap:29px;margin:0;padding:0;border:0;background:transparent;box-shadow:none;font-size:15px;line-height:1.9}
.shared-nav a{color:#242723;text-decoration:none}
.shared-nav a:hover{color:#b75432}
.shared-footer-inner{position:relative;display:flex;align-items:center;justify-content:center;text-align:center;border-top:1px solid #242723;padding:23px 0 30px;color:#797c73;font-size:13px;line-height:1.9}
.shared-footer .shared-back-top{position:fixed;right:max(22px,env(safe-area-inset-right));bottom:calc(22px + env(safe-area-inset-bottom));z-index:100;display:flex;align-items:center;justify-content:center;width:48px;height:48px;border:1px solid #d4d5cb;border-radius:50%;background:#f5f3ed;color:#242723;font:26px/1 Arial,sans-serif;box-shadow:0 3px 12px rgba(36,39,35,.12);text-decoration:none}
.shared-footer .shared-back-top:hover{color:#b75432;border-color:#b75432}
.shared-header a:focus-visible,.shared-footer a:focus-visible{outline:2px solid #b75432;outline-offset:5px}
html{scroll-behavior:smooth}
@media(max-width:950px){.shared-shell{padding:0 28px}}
@media(max-width:680px){.shared-shell{padding:0 22px}.shared-masthead{display:block;padding:23px 0 20px}.shared-header .shared-brand{font-size:30px;gap:11px}.shared-mark{width:25px;height:25px;flex-basis:25px}.shared-header .shared-nav{font-size:14px;gap:20px;flex-wrap:wrap;margin-top:17px}.shared-footer-inner{padding-top:20px;padding-bottom:20px;font-size:12px}.shared-footer .shared-back-top{right:max(16px,env(safe-area-inset-right));bottom:calc(16px + env(safe-area-inset-bottom));width:44px;height:44px;font-size:24px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Decorative icons shared by homepage headings, category tabs and footer lists. */
:root{--list-bulb-icon:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.65%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M9%2018h6M9.5%2021h5M8.5%2015.5C8.5%2013.5%205.5%2012%205.5%208.5a6.5%206.5%200%200%201%2013%200c0%203.5-3%205-3%207H8.5Z%22%2F%3E%3Cpath%20d%3D%22M10%206a3%203%200%200%201%204%200%22%2F%3E%3C%2Fsvg%3E");--list-tag-icon:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.65%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22m21%2013-8%208a1.4%201.4%200%200%201-2%200l-8-8V3h10l8%208a1.4%201.4%200%200%201%200%202Z%22%2F%3E%3Ccircle%20cx%3D%228%22%20cy%3D%228%22%20r%3D%221.5%22%2F%3E%3C%2Fsvg%3E")}
#recommended-title::before,
#article-shelf-title-0 a::before,
.tabs [data-category]:not([data-category="すべて"])::before,
.entry-category::before,
.article-shelf h2:not(#article-shelf-title-0) a::before{
 content:"";display:inline-block;width:1em;height:1em;margin-right:.4em;vertical-align:-.12em;
 background-color:currentColor;-webkit-mask:var(--list-tag-icon) center/contain no-repeat;mask:var(--list-tag-icon) center/contain no-repeat;
}
#recommended-title::before,#article-shelf-title-0 a::before{
 width:1.1em;height:1.1em;vertical-align:-.15em;color:#b75432;
 -webkit-mask-image:var(--list-bulb-icon);mask-image:var(--list-bulb-icon);
}