:root{color-scheme:dark;--bg: #0a0a0a;--bg-elevated: #16181c;--hover: #15171a;--bg-blur: rgba(10, 10, 10, .85);--text: #e7e9ea;--text-secondary: #a9aeb3;--text-muted: #71767b;--accent: #1d9bf0;--accent-soft: #1a8cd8;--accent-ink: #ffffff;--like: #f91880;--border: #2a2c30;--border-strong: #383b40;--shadow: 0 2px 12px rgba(0, 0, 0, .5);--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;--font-mono: "SF Mono", "Menlo", "Consolas", monospace;--measure: 600px;--pad-x: 1rem}:root[data-theme=light]{color-scheme:light;--bg: #ffffff;--bg-elevated: #f7f9f9;--hover: #f7f9f9;--bg-blur: rgba(255, 255, 255, .85);--text: #0f1419;--text-secondary: #536471;--text-muted: #536471;--accent: #1d9bf0;--accent-soft: #1a8cd8;--accent-ink: #ffffff;--like: #f91880;--border: #eff3f4;--border-strong: #cfd9de;--shadow: 0 2px 12px rgba(0, 0, 0, .12)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{max-width:var(--measure);margin:0 auto;border-left:1px solid var(--border);border-right:1px solid var(--border);min-height:100vh;padding-bottom:env(safe-area-inset-bottom)}.app-header{position:sticky;top:0;z-index:10;max-width:var(--measure);margin:0 auto;background:var(--bg-blur);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);color:var(--text);font-family:var(--font-sans);font-size:1rem;font-weight:700;letter-spacing:.02em;display:flex;align-items:center;justify-content:space-between;padding:.75rem calc(var(--pad-x) + env(safe-area-inset-right)) .75rem calc(var(--pad-x) + env(safe-area-inset-left));padding-top:calc(.75rem + env(safe-area-inset-top))}.app-header__title{flex:1 1 auto}.theme-toggle{flex:none;display:inline-flex;align-items:center;justify-content:center;min-width:40px;min-height:40px;background:none;border:0;padding:0;color:var(--text);font-size:1.1rem;line-height:1;cursor:pointer;-webkit-tap-highlight-color:transparent}.theme-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:999px}:root[data-theme=dark] .theme-toggle:before{content:"☀"}:root[data-theme=light] .theme-toggle:before{content:"☾"}.lang-toggle{flex:none;display:inline-flex;align-items:center;justify-content:center;min-width:40px;min-height:40px;background:none;border:0;padding:0;color:var(--text);font-size:1.05rem;font-weight:700;line-height:1;cursor:pointer;-webkit-tap-highlight-color:transparent}.lang-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:999px}.lang-toggle:before{content:"A"}:root[data-lang=en] .lang-toggle:before{content:"あ"}button.pull-banner{position:fixed;left:50%;transform:translate(-50%);top:calc(4.25rem + env(safe-area-inset-top));z-index:40;display:block;max-width:calc(100vw - 2 * var(--pad-x));background:var(--accent);color:var(--accent-ink);border:0;border-radius:999px;padding:.5em 1.1em;box-shadow:var(--shadow);font-family:var(--font-sans);font-size:.85rem;font-weight:600;text-align:center;white-space:nowrap;cursor:pointer}button.pull-banner--hidden,button.pull-banner[hidden]{display:none}article.card{display:block;background:none;box-shadow:none;border-radius:0;border:0;border-bottom:1px solid var(--border);padding:.85rem var(--pad-x);cursor:pointer;-webkit-tap-highlight-color:transparent;transition:background .15s ease}article.card:hover,article.card:active{background:var(--hover)}article.card:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}article.card[data-layer="3"]{border-left:2px solid var(--accent-soft);padding-left:calc(var(--pad-x) - 2px)}.card__main{margin:0;color:var(--text);font-size:1.0625rem;font-weight:700;line-height:1.4}.card__sub{margin:.15rem 0 0;color:var(--text-muted);font-size:.85rem}.card--read .card__main{color:var(--text-muted);font-weight:600}.detail{position:fixed;inset:0;z-index:50;max-width:var(--measure);margin:0 auto;background:var(--bg);overflow-y:auto;-webkit-overflow-scrolling:touch;animation:yoichi-detail-in .18s ease}@keyframes yoichi-detail-in{0%{opacity:0;transform:translate(8px)}to{opacity:1;transform:translate(0)}}.detail__bar{position:sticky;top:0;z-index:1;display:flex;align-items:center;justify-content:space-between;background:var(--bg-blur);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);padding:0 calc(var(--pad-x) + env(safe-area-inset-right)) 0 calc(var(--pad-x) + env(safe-area-inset-left));padding-top:env(safe-area-inset-top)}button.detail__back{display:inline-flex;align-items:center;min-height:44px;background:none;border:0;padding:0;color:var(--accent);font-family:var(--font-sans);font-size:1rem;font-weight:600;cursor:pointer;-webkit-tap-highlight-color:transparent}button.detail__back:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.detail__body{padding:1rem calc(var(--pad-x) + env(safe-area-inset-right)) calc(2rem + env(safe-area-inset-bottom)) calc(var(--pad-x) + env(safe-area-inset-left))}.detail__headline{margin:0;color:var(--text);font-size:1.375rem;font-weight:800;line-height:1.3}.detail__sub{margin:.25rem 0 0;color:var(--text-muted);font-size:.95rem}.detail__summary{margin:1rem 0;padding-bottom:1rem;border-bottom:1px solid var(--border);color:var(--text);font-size:1rem;line-height:1.7}.detail__deep-dive p{margin:.9em 0;color:var(--text);line-height:1.8}.detail__deep-dive h2,.detail__deep-dive h3{color:var(--text);font-weight:700;line-height:1.35;margin:1.4em 0 .5em}.detail__deep-dive h2{font-size:1.2rem}.detail__deep-dive h3{font-size:1.05rem}.detail__deep-dive ul,.detail__deep-dive ol{padding-left:1.25em}.detail__deep-dive li{margin:.35em 0}.detail__deep-dive li::marker{color:var(--text-muted)}.detail__deep-dive blockquote{margin:.9em 0;border-left:2px solid var(--accent-soft);padding-left:.9em;color:var(--text-secondary);font-style:italic}.detail__deep-dive code{font-family:var(--font-mono);background:var(--bg-elevated);padding:.1em .35em;border-radius:4px;font-size:.9em}.detail__deep-dive strong{color:var(--text);font-weight:700}.detail__deep-dive em{font-style:italic}.detail__deep-dive a{color:var(--accent);text-decoration:underline;text-underline-offset:2px;word-break:break-word}ul.card__lineage{display:flex;flex-wrap:wrap;gap:.5em;list-style:none;padding:0;margin:1.25rem 0 0}ul.card__lineage li{font-size:.8rem;color:var(--text-muted);border:1px solid var(--border-strong);border-radius:999px;padding:.15em .7em}ul.card__citations{list-style:none;padding:0;margin-top:1.25rem;padding-top:1rem;border-top:1px solid var(--border)}ul.card__citations li{margin:.4em 0;font-size:.85rem}ul.card__citations a{color:var(--accent);text-decoration:underline;text-underline-offset:2px;word-break:break-word}ul.card__citations a:hover{color:var(--accent-soft)}.placeholder{color:var(--text-muted);font-family:var(--font-sans);text-align:center;padding:4rem var(--pad-x)}.card__actions{display:flex;align-items:center;margin-top:.35rem;margin-left:-.5rem}.like-btn{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:0;background:none;border:0;border-radius:999px;color:var(--text-muted);cursor:pointer;-webkit-tap-highlight-color:transparent;transition:color .12s ease,background-color .12s ease}.like-btn__icon{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2}.like-btn:hover{color:var(--like);background:#f918801a}.like-btn:focus-visible{outline:2px solid var(--like);outline-offset:2px}.like-btn--liked{color:var(--like)}.like-btn--liked .like-btn__icon{fill:var(--like);stroke:var(--like)}.like-btn--pop .like-btn__icon{animation:like-pop .3s ease}@keyframes like-pop{0%{transform:scale(1)}35%{transform:scale(1.35)}70%{transform:scale(.9)}to{transform:scale(1)}}.detail__like{margin-right:-.5rem}.nav-likes{flex:none;display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;background:none;border:0;padding:0;color:var(--text-muted);cursor:pointer;-webkit-tap-highlight-color:transparent}.nav-likes:hover{color:var(--text)}.nav-likes:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:999px}.nav-likes__icon{width:24px;height:24px;fill:currentColor}#likes-view[hidden],body.likes-open .app-header,body.likes-open #app,body.likes-open .pull-banner,body.likes-open .field-filter{display:none}.field-filter{position:sticky;top:calc(4.25rem + env(safe-area-inset-top));z-index:9;display:flex;gap:.5rem;max-width:var(--measure);margin-left:auto;margin-right:auto;padding:.5rem calc(var(--pad-x) + env(safe-area-inset-right)) .5rem calc(var(--pad-x) + env(safe-area-inset-left));background:var(--bg-blur);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch;scrollbar-width:none}.field-filter::-webkit-scrollbar{display:none}.field-chip{flex:none;display:inline-flex;align-items:center;min-height:36px;padding:.35rem .85rem;border:1px solid var(--border-strong);border-radius:999px;background:none;color:var(--text-secondary);font-family:var(--font-sans);font-size:.85rem;line-height:1;cursor:pointer;-webkit-tap-highlight-color:transparent}.field-chip:hover{color:var(--text)}.field-chip:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.field-chip--active{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.likes__bar{position:sticky;top:0;z-index:1;display:flex;align-items:center;gap:.75rem;background:var(--bg-blur);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);max-width:var(--measure);margin:0 auto;padding:0 calc(var(--pad-x) + env(safe-area-inset-right)) 0 calc(var(--pad-x) + env(safe-area-inset-left));padding-top:env(safe-area-inset-top)}button.likes__back{display:inline-flex;align-items:center;min-height:44px;background:none;border:0;padding:0;color:var(--accent);font-family:var(--font-sans);font-size:1rem;font-weight:600;cursor:pointer;-webkit-tap-highlight-color:transparent}button.likes__back:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.likes__title{color:var(--text);font-family:var(--font-sans);font-weight:700;font-size:1.05rem}.likes-empty{max-width:var(--measure);margin:0 auto;padding:4rem var(--pad-x);text-align:center;color:var(--text-muted)}.likes-empty__main{margin:0 0 .5rem;font-size:1rem}.likes-empty__sub{margin:0;font-size:.85rem}.card--like{max-width:var(--measure);margin-left:auto;margin-right:auto}.card__liked-meta{display:flex;align-items:center;gap:.5rem;margin:.35rem 0 0;font-size:.8rem;color:var(--text-muted)}.like-sync--ok{color:var(--text-muted)}.like-sync--pending{color:var(--accent)}.detail__actions{display:flex;gap:.5rem;margin:.5rem 0 1rem;max-width:var(--measure)}.detail__speak,.detail__share{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 1rem;border:1px solid var(--border-strong);border-radius:9999px;background:none;color:var(--text);font-family:var(--font-sans);font-size:.9rem;font-weight:600;cursor:pointer;-webkit-tap-highlight-color:transparent}.detail__speak:hover,.detail__share:hover{background:var(--hover)}.detail__speak:focus-visible,.detail__share:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.detail__speak[aria-pressed=true]{color:var(--accent);border-color:var(--accent)}button.detail__more{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;background:none;border:0;padding:0;color:var(--text-secondary);font-family:var(--font-sans);font-size:1.25rem;line-height:1;cursor:pointer;-webkit-tap-highlight-color:transparent}button.detail__more:hover{color:var(--text)}button.detail__more:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:9999px}.feedback-scrim{position:fixed;inset:0;z-index:1100;background:#00000080;animation:feedback-scrim-in .2s ease-out}:root[data-theme=light] .feedback-scrim{background:#00000059}.feedback-sheet{position:fixed;left:0;right:0;bottom:0;z-index:1101;margin:0 auto;max-width:var(--measure);background:var(--bg-elevated);border-top:1px solid var(--border);border-top-left-radius:16px;border-top-right-radius:16px;box-shadow:var(--shadow);padding:.5rem 0 calc(.5rem + env(safe-area-inset-bottom));display:flex;flex-direction:column;animation:feedback-sheet-in .22s cubic-bezier(.2,.8,.2,1)}.feedback-item{display:flex;align-items:center;width:100%;min-height:52px;padding:0 calc(var(--pad-x) + env(safe-area-inset-left));background:none;border:0;color:var(--text);font-family:var(--font-sans);font-size:1rem;font-weight:600;text-align:left;cursor:pointer;-webkit-tap-highlight-color:transparent}.feedback-item:hover{background:var(--hover)}.feedback-item:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}@keyframes feedback-scrim-in{0%{opacity:0}to{opacity:1}}@keyframes feedback-sheet-in{0%{transform:translateY(100%)}to{transform:translateY(0)}}.toast{position:fixed;left:50%;bottom:2rem;transform:translate(-50%);z-index:1000;max-width:calc(100vw - 2rem);padding:.6rem 1rem;background:var(--bg-elevated);color:var(--text);border:1px solid var(--border);border-radius:9999px;box-shadow:var(--shadow);font-size:.85rem;text-align:center;animation:toast-in .2s ease-out}@keyframes toast-in{0%{opacity:0;transform:translate(-50%) translateY(.5rem)}to{opacity:1;transform:translate(-50%) translateY(0)}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation:none!important;transition:none!important}}