:root{--gray: #ccc;--light-gray: #fafafa;--extra-light-gray: #eee;--serif: "Times New Roman", "YuMincho", "Hiragino Mincho ProN", "Yu Mincho", "MS PMincho", serif;--sans-serif: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", sans-serif;--monospace: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "DejaVu Sans Mono", "Courier New", monospace;--radius-s: 6px}:where(:root){text-spacing-trim:trim-start;text-autospace:normal;line-break:strict;font-feature-settings:"palt";font-family:var(--sans-serif);font-size:1rem;line-height:1.68;letter-spacing:.072em}:where(article){margin:0 auto;max-width:600px}:where(h1){font-size:2rem;margin-block:1.25rem;border-bottom:1px solid var(--gray);line-height:1.26}@media(max-width:600px){:where(h1){font-size:1.8rem;margin-block:1.2rem;line-height:1.4}}:where(h2){font-size:1.75rem;margin-block:1.5rem;border-left:2px solid var(--gray);padding-left:calc(.5em - 2px);line-height:1.44}@media(max-width:600px){:where(h2){font-size:1.6rem;padding-left:calc(.4em - 2px);margin-block:1.4rem;line-height:1.575}}:where(h3){font-size:1.5rem;margin-block:1.75rem}:where(h3):before{content:"ー ";color:var(--gray);font-weight:400;font-size:.75em;vertical-align:middle}@media(max-width:600px){:where(h3){font-size:1.4rem;margin-block:1.6rem}}:where(h4){font-size:1.25rem;margin-block:1.5rem}@media(max-width:600px){:where(h4){font-size:1.2rem;margin-block:1.6rem}}:where(h5){font-size:1rem;margin-block:1.5rem}@media(max-width:600px){:where(h5){margin-block:1.6rem}}:where(h6){font-size:1rem;margin-block:1.5rem;font-weight:400;font-style:italic;text-decoration:underline var(--gray)}@media(max-width:600px){:where(h6){margin-block:1.6rem}}:where(pre:has(code)){font-family:var(--monospace);padding:.5em .75em;border-radius:var(--radius-s)}:where(small){font-size:.75em}