/* Reading surfaces and theme tokens shared by both languages. */
:root{color-scheme:light;--body-text:#50584e;--surface:#f9f7f0}
:root[data-theme="dark"]{color-scheme:dark;--paper:#171e1a;--ink:#e8ede6;--muted:#acb7ac;--accent:#e4a18b;--line:#435047;--sage:#26332b;--card:#222d26;--body-text:#cbd4c9;--surface:#202a23}
.theme-control{display:block;flex-shrink:0;width:90px;font-size:12px}
.header-tools{display:flex;align-items:center;gap:20px;flex-shrink:0;margin-left:auto}
.header .brand{font-family:Georgia,serif;font-weight:bold}
.header-tools .language-switch{margin-left:0}
@media(max-width:760px){.header-tools{gap:10px}.header .brand{font-size:18px}.header-tools .theme-control{width:76px}}
.theme-control select{width:100%;background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:3px;padding:7px 4px;font-size:12px;cursor:pointer}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.article p,.article li{font-size:18px;line-height:1.95;color:var(--body-text)}
.article .article-meta,.article .sources p,.article .sources li{font-size:13px;color:var(--muted)}
.article .intro{font-size:20px;color:var(--ink)}
.article h2{margin-top:48px}
.article-toc{padding:20px 0;border-block:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px 20px;margin:28px 0}
.article-toc p{width:100%;font-size:12px;color:var(--muted);margin:0}
.article .article-toc a{font-size:13px}
.table-scroll:focus-visible{outline:3px solid var(--accent);outline-offset:5px}
.table-scroll{max-width:100%;overflow-x:auto;margin:28px 0}
.article table{width:100%;min-width:560px;border-collapse:collapse;font-size:14px;line-height:1.8}
.article th,.article td{text-align:left;padding:14px;border:1px solid var(--line);vertical-align:top}
.article th{background:var(--sage);color:var(--ink)}
.article td{color:var(--body-text)}
.start-reading{margin:32px 0;padding:24px;background:var(--sage);border-top:2px solid var(--accent)}
.start-reading h2{font-size:24px;margin:0 0 16px}
.start-reading ol{padding-left:22px;margin:0;display:grid;gap:12px}
.start-reading a{text-decoration:underline;text-underline-offset:4px}
.start-reading small{display:block;color:var(--muted);font-size:12px}
:root[data-theme="dark"] .featured{background:var(--surface)}
:root[data-theme="dark"] .intro,:root[data-theme="dark"] .hero-description,:root[data-theme="dark"] .case-intro,:root[data-theme="dark"] .case-intro p,:root[data-theme="dark"] .contact-section p{color:var(--body-text)}
:root[data-theme="dark"] .button{background:var(--sage);color:var(--ink);border-color:var(--line)}
:root[data-theme="dark"] .button:hover{background:var(--line)}
:root[data-theme="dark"] .skip{background:var(--sage);color:var(--ink)}
:root[data-theme="dark"] :is(form,.brief-form) select,:root[data-theme="dark"] :is(form,.brief-form) textarea{background:var(--surface);color:var(--ink);border-color:var(--line)}
:root[data-theme="dark"] .contact-section,:root[data-theme="dark"] .hero-art,:root[data-theme="dark"] .work-visual,:root[data-theme="dark"] .case-highlight{background:var(--surface)}
@media(max-width:760px){.theme-control{width:80px}.header{gap:12px}.header .brand{font-size:20px}.article p,.article li{font-size:16px;line-height:1.95}.article .intro{font-size:18px}.article-toc{gap:12px 18px}.start-reading{padding:20px}.start-reading h2{font-size:22px}}

:root[data-theme="dark"] .lab-section{background:var(--sage);color:var(--ink)}

.article .eyebrow{font-size:11px;line-height:1.6;color:var(--accent)}
.article .article-toc p{font-size:12px;line-height:1.6}
.brief-form button:disabled{opacity:.5;cursor:not-allowed}

/* Long-form rhythm; language-specific line spacing retains natural reading. */
.article{padding:56px 0 80px}
.article h1{font-size:clamp(30px,3.5vw,40px);line-height:1.45;overflow-wrap:break-word}
.article p{margin-bottom:1.25em}
.article h2{margin:44px 0 18px;line-height:1.5}
.article ul,.article ol{padding-left:1.5em}
.article li+li{margin-top:10px}
.article blockquote{margin:28px 0;padding:8px 24px;border-left:3px solid var(--accent);color:var(--body-text)}
html[lang=en] .article{max-width:700px}
html[lang=en] .article p,html[lang=en] .article li{line-height:1.85}
.article .article-toc{gap:8px;padding:20px 0}
.article .article-toc p{margin:0 0 4px}
.article .article-toc a{display:inline-flex;align-items:center;min-height:44px;padding:8px 12px;border:1px solid var(--line);text-decoration:none}
.article .article-toc a:hover,.article .article-toc a:focus-visible{background:var(--sage);border-color:var(--accent)}
.article .article-end{border-top:1px solid var(--line);padding-top:24px;align-items:center;gap:16px 24px}
.article .article-end .end-label{flex-basis:100%;margin:0;font-size:12px;color:var(--muted)}
.article .article-end a{min-height:44px}
@media(max-width:760px){
 .article{padding:32px 0 60px}
 .article h2{font-size:23px;margin:36px 0 16px}
 .article .article-toc a{font-size:12px}
 .article blockquote{padding:8px 16px}
}

/* Short provenance notes distinguish content type from editorial status. */
.article .content-note{font-size:13px;line-height:1.85;color:var(--muted);max-width:720px;margin:12px 0 24px}
.article .content-revision{font-size:13px;line-height:1.85;color:var(--muted);border-top:1px solid var(--line);padding-top:18px;margin-top:28px}
@media print{.decision-tool>.content-note{display:none!important}}

.article-feedback{margin-top:32px;padding:24px 0;border-top:1px solid var(--line)}
.article .article-feedback h2{font-size:20px;margin-top:0}
.article .article-feedback .fine-print{font-size:12px;color:var(--muted);line-height:1.8}
.article-feedback a{display:inline-block;min-height:44px;overflow-wrap:anywhere}

/* Decorative action icons supplement the visible labels. */
.ui-icon{display:inline-block;width:18px;height:18px;vertical-align:-.2em;margin-inline-end:7px;flex-shrink:0;pointer-events:none}
.theme-control{position:relative;width:110px}
.theme-control .theme-icon{position:absolute;left:8px;top:50%;transform:translateY(-50%);margin:0;width:16px;height:16px;z-index:1}
.theme-control select{appearance:none;-webkit-appearance:none;padding:7px 22px 7px 30px}
.theme-control::after{content:"";position:absolute;right:9px;top:50%;width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:translateY(-70%) rotate(45deg);pointer-events:none}
.text-link:has(>.ui-icon){gap:7px}
.text-link>.ui-icon,.button>.ui-icon{margin-inline-end:0}
.button:has(>.ui-icon){justify-content:center;gap:8px}
@media(max-width:760px){.theme-control,.header-tools .theme-control{width:110px}}

.article-feedback .text-link > .contact-icon{margin-inline-end:7px}

/* Keep input hints readable in both display modes, including browser defaults. */
input::placeholder,textarea::placeholder{color:var(--muted);opacity:1}