/* Library: the reader and the public pages. Everything is scoped to .gtl and styled from --gtl-* properties:
 * neutral defaults here (light and dark), the theme's own tokens when it maps them (gatechy_plugin_tokens), the
 * app's tokens inside the app (.slr-app) and the course's inside a course (.gtc-app). */

/* ------------------------------------------------------------------ tokens */
:root {
	--gtl-font: inherit;
	--gtl-font-display: inherit;
	--gtl-font-read: inherit;
	--gtl-font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
	--gtl-bg: transparent;
	--gtl-surface: #ffffff;
	--gtl-surface-2: #f6f7f9;
	--gtl-surface-3: #eceef2;
	--gtl-text: #15181e;
	--gtl-text-soft: #3b414c;
	--gtl-muted: #5f6673;
	--gtl-border: #c9ced6;
	--gtl-line: #e3e6eb;
	--gtl-primary: #2450c4;
	--gtl-on-primary: #ffffff;
	--gtl-primary-soft: #e8eefc;
	--gtl-accent: #2450c4;
	--gtl-link: #2450c4;
	--gtl-ai: #0e7068;
	--gtl-on-ai: #ffffff;
	--gtl-ai-soft: #e3f3f1;
	--gtl-ok: #17713f;
	--gtl-ok-soft: #e4f4ea;
	--gtl-warn: #8a5a00;
	--gtl-warn-soft: #fbf1dc;
	--gtl-danger: #b3261e;
	--gtl-danger-soft: #fce9e7;
	--gtl-info-soft: #e7f1fb;
	--gtl-mark: #fde68a;
	--gtl-focus: #2450c4;
	--gtl-shadow-color: rgba(21, 24, 30, 0.12);
	--gtl-shadow: 0 1px 2px rgba(21, 24, 30, 0.06), 0 4px 14px rgba(21, 24, 30, 0.06);
	--gtl-shadow-sm: 0 1px 2px rgba(21, 24, 30, 0.08);
	--gtl-shadow-lg: 0 12px 40px rgba(21, 24, 30, 0.18);
	--gtl-radius: 12px;
	--gtl-radius-sm: 8px;
	--gtl-radius-lg: 18px;
	--gtl-border-width: 1px;
	--gtl-max: 1240px;
	--gtl-sticky-top: 24px;
}
/* Dark unless the page says light (data-mode or data-theme on the root): never the system's light. The same weight
 * as :root, so a theme's :root:root mapping still wins. */
:root:where(:not([data-mode="light"]):not([data-theme="light"])) {
	--gtl-surface: #171a20;
	--gtl-surface-2: #1d2129;
	--gtl-surface-3: #262b35;
	--gtl-text: #e9ebef;
	--gtl-text-soft: #c9cdd5;
	--gtl-muted: #a2a9b5;
	--gtl-border: #3b424f;
	--gtl-line: #2b313b;
	--gtl-primary: #7b9bff;
	--gtl-on-primary: #0d1220;
	--gtl-primary-soft: #1f2a48;
	--gtl-accent: #9fb5ff;
	--gtl-link: #9fb5ff;
	--gtl-ai: #3fd3c3;
	--gtl-on-ai: #062320;
	--gtl-ai-soft: #10302d;
	--gtl-ok: #5fd08f;
	--gtl-ok-soft: #12301f;
	--gtl-warn: #f2c35b;
	--gtl-warn-soft: #33290f;
	--gtl-danger: #ff8a80;
	--gtl-danger-soft: #3a1714;
	--gtl-info-soft: #13283d;
	--gtl-mark: #6b5a12;
	--gtl-focus: #9fb5ff;
	--gtl-shadow-color: rgba(0, 0, 0, 0.5);
	--gtl-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 6px 18px rgba(0, 0, 0, 0.3);
	--gtl-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
}
[data-theme="dark"] {
	--gtl-surface: #171a20;
	--gtl-surface-2: #1d2129;
	--gtl-surface-3: #262b35;
	--gtl-text: #e9ebef;
	--gtl-text-soft: #c9cdd5;
	--gtl-muted: #a2a9b5;
	--gtl-border: #3b424f;
	--gtl-line: #2b313b;
	--gtl-primary: #7b9bff;
	--gtl-on-primary: #0d1220;
	--gtl-primary-soft: #1f2a48;
	--gtl-accent: #9fb5ff;
	--gtl-link: #9fb5ff;
	--gtl-ai: #3fd3c3;
	--gtl-on-ai: #062320;
	--gtl-ai-soft: #10302d;
	--gtl-ok: #5fd08f;
	--gtl-ok-soft: #12301f;
	--gtl-warn: #f2c35b;
	--gtl-warn-soft: #33290f;
	--gtl-danger: #ff8a80;
	--gtl-danger-soft: #3a1714;
	--gtl-info-soft: #13283d;
	--gtl-mark: #6b5a12;
	--gtl-focus: #9fb5ff;
	--gtl-shadow-color: rgba(0, 0, 0, 0.5);
	--gtl-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 6px 18px rgba(0, 0, 0, 0.3);
	--gtl-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
}

/* Inside a course on the learner site: the course's look. */
.gtc-app .gtl {
	--gtl-font: var(--gtc-font, inherit);
	--gtl-font-display: var(--gtc-font-display, inherit);
	--gtl-surface: var(--gtc-surface, #fff);
	--gtl-surface-2: var(--gtc-surface-2, #f6f7f9);
	--gtl-text: var(--gtc-text, inherit);
	--gtl-text-soft: var(--gtc-text-soft, inherit);
	--gtl-muted: var(--gtc-muted, #5f6673);
	--gtl-border: var(--gtc-border, #c9ced6);
	--gtl-primary: var(--gtc-primary, #2450c4);
	--gtl-on-primary: var(--gtc-on-primary, #fff);
	--gtl-link: var(--gtc-link, #2450c4);
	--gtl-accent: var(--gtc-accent, #2450c4);
	--gtl-radius: var(--gtc-radius, 12px);
	--gtl-radius-sm: var(--gtc-radius-sm, 8px);
	--gtl-border-width: var(--gtc-border-width, 1px);
	--gtl-shadow: var(--gtc-shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.08));
}

/* ----------------------------------------------------------------- basics */
.gtl { color: var(--gtl-text); font-family: var(--gtl-font); line-height: 1.55; }
.gtl *, .gtl *::before, .gtl *::after { box-sizing: border-box; }
.gtl a { color: var(--gtl-link); text-underline-offset: 3px; }
.gtl a:hover { text-decoration-thickness: 2px; }
.gtl :focus-visible { outline: 3px solid var(--gtl-focus); outline-offset: 2px; border-radius: 4px; }
.gtl h1, .gtl h2, .gtl h3 { color: var(--gtl-text); font-family: var(--gtl-font-display); }
.gtl-icon { width: 1.2em; height: 1.2em; flex: none; vertical-align: -0.2em; }
.gtl-sr { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.gtl-muted { color: var(--gtl-muted); }
.gtl-small { font-size: 0.85em; }
.gtl-site { max-width: var(--gtl-max); margin: 0 auto; padding: 0 16px 64px; font-size: 16px; }
.gtl-site--embed { padding: 0; }
.gtl-main-wrap { display: block; width: 100%; }
.gtl-wrap { padding-top: 28px; }

/* --------------------------------------------------------------- buttons */
.gtl-btn { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 40px; padding: 8px 15px; border: var(--gtl-border-width) solid var(--gtl-border); border-radius: var(--gtl-radius-sm); background: var(--gtl-surface); color: var(--gtl-text); font: inherit; font-size: 15px; font-weight: 600; line-height: 1.2; text-decoration: none; cursor: pointer; white-space: nowrap; transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease; }
.gtl-btn:hover { background: var(--gtl-surface-2); color: var(--gtl-text); text-decoration: none; }
.gtl-btn:active { transform: translateY(1px); }
.gtl-btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.gtl-btn .gtl-icon { width: 18px; height: 18px; }
.gtl-btn--primary { background: var(--gtl-primary); border-color: var(--gtl-primary); color: var(--gtl-on-primary); box-shadow: var(--gtl-shadow-sm); }
.gtl-btn--primary:hover { background: var(--gtl-primary); color: var(--gtl-on-primary); filter: brightness(1.06); }
.gtl-btn--ai { background: var(--gtl-ai); border-color: var(--gtl-ai); color: var(--gtl-on-ai); }
.gtl-btn--ai:hover { background: var(--gtl-ai); color: var(--gtl-on-ai); filter: brightness(1.08); }
.gtl-btn--ghost { background: transparent; }
.gtl-btn--small { min-height: 32px; padding: 5px 10px; font-size: 13.5px; }
.gtl-iconbtn { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; padding: 0; border: 0; border-radius: var(--gtl-radius-sm); background: transparent; color: inherit; cursor: pointer; }
.gtl-iconbtn:hover { background: var(--gtl-surface-3); }
.gtl-iconbtn .gtl-icon { width: 20px; height: 20px; }
.gtl-linkbtn { display: inline-flex; align-items: center; gap: 5px; padding: 0; border: 0; background: none; color: var(--gtl-link); font: inherit; text-align: left; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.gtl-linkbtn .gtl-icon { width: 16px; height: 16px; }
.gtl-chip { display: inline-flex; align-items: center; gap: 6px; min-height: 32px; padding: 5px 12px; border: var(--gtl-border-width) solid var(--gtl-line); border-radius: 999px; background: var(--gtl-surface); color: var(--gtl-text); font: inherit; font-size: 14px; line-height: 1.25; text-align: left; cursor: pointer; text-decoration: none; }
.gtl a.gtl-chip { color: var(--gtl-text); text-decoration: none; }
.gtl-chip:hover { border-color: var(--gtl-border); background: var(--gtl-surface-2); }
.gtl-chip.is-current { background: var(--gtl-text); border-color: var(--gtl-text); color: var(--gtl-surface); }
.gtl a.gtl-chip.is-current { color: var(--gtl-surface); }
.gtl-chip .gtl-icon { width: 16px; height: 16px; }
.gtl-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 0; padding: 0; list-style: none; }
.gtl-chips--stack { flex-direction: column; align-items: flex-start; }

/* ---------------------------------------------------------- library bar */
.gtl-bar { border-bottom: 1px solid var(--gtl-line); }
.gtl-bar__inner { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; padding: 16px 0; }
.gtl .gtl-bar__brand { display: inline-flex; align-items: center; gap: 10px; min-width: 0; color: var(--gtl-text); font-family: var(--gtl-font-display); font-size: 19px; font-weight: 750; text-decoration: none; letter-spacing: -0.01em; }
.gtl-bar__icon { width: 34px; height: 34px; padding: 6px; border-radius: 10px; background: var(--gtl-primary-soft); color: var(--gtl-primary); }
.gtl-bar__name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 320px; }
.gtl-bar__spacer { flex: 1; }
.gtl-bar .gtl-search, .gtl-bar .gtl-search-holder { flex: 1 1 280px; max-width: 520px; }
.gtl-bar__nav { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-left: auto; }
.gtl .gtl-bar__link { display: inline-flex; align-items: center; gap: 6px; min-height: 40px; padding: 8px 12px; border-radius: var(--gtl-radius-sm); color: var(--gtl-text-soft); font-weight: 600; text-decoration: none; }
.gtl .gtl-bar__link:hover, .gtl .gtl-bar__link.is-current { background: var(--gtl-surface-2); color: var(--gtl-text); }
.gtl-bar__link .gtl-icon { width: 18px; height: 18px; }

/* --------------------------------------------------------------- search */
.gtl-search { position: relative; display: flex; align-items: center; gap: 8px; height: 44px; padding: 0 8px 0 12px; border: var(--gtl-border-width) solid var(--gtl-border); border-radius: var(--gtl-radius); background: var(--gtl-surface); }
.gtl-search:focus-within { border-color: var(--gtl-focus); box-shadow: 0 0 0 3px color-mix(in srgb, var(--gtl-focus) 22%, transparent); }
.gtl-search__icon { width: 20px; height: 20px; color: var(--gtl-muted); }
.gtl .gtl-search__input { flex: 1; min-width: 0; height: 100%; margin: 0; padding: 0; border: 0; background: transparent; color: var(--gtl-text); font: inherit; font-size: 16px; outline: none; box-shadow: none; }
.gtl .gtl-search__input::-webkit-search-cancel-button { cursor: pointer; }
.gtl-search__key { display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 24px; padding: 0 6px; border: 1px solid var(--gtl-line); border-radius: 6px; color: var(--gtl-muted); font: 600 12px/1 var(--gtl-font-mono); }
.gtl-search__busy { width: 16px; height: 16px; border: 2px solid var(--gtl-line); border-top-color: var(--gtl-primary); border-radius: 50%; animation: gtl-spin 0.7s linear infinite; }
.gtl-search--hero { height: 60px; padding-left: 18px; border-width: max(var(--gtl-border-width), 1px); border-radius: var(--gtl-radius-lg); box-shadow: var(--gtl-shadow); }
.gtl-search--hero .gtl-search__input { font-size: 18px; }
.gtl-search--hero .gtl-search__icon { width: 24px; height: 24px; }
.gtl-search--page { height: 52px; margin: 0 0 18px; }
.gtl-search__go { min-height: 40px; }
.gtl-search-holder { display: block; }
.gtl-suggest { position: absolute; top: calc(100% + 8px); left: 0; right: 0; z-index: 60; max-height: min(70vh, 520px); overflow: auto; padding: 6px; border: var(--gtl-border-width) solid var(--gtl-border); border-radius: var(--gtl-radius); background: var(--gtl-surface); box-shadow: var(--gtl-shadow-lg); text-align: left; }
.gtl-suggest__opt { display: flex; align-items: flex-start; gap: 10px; padding: 10px 12px; border-radius: var(--gtl-radius-sm); cursor: pointer; }
.gtl-suggest__opt .gtl-icon { width: 18px; height: 18px; margin-top: 2px; color: var(--gtl-muted); }
.gtl-suggest__opt.is-active { background: var(--gtl-primary-soft); }
.gtl-suggest__opt--all, .gtl-suggest__opt--ask { align-items: center; color: var(--gtl-text-soft); font-weight: 600; font-size: 14px; }
.gtl-suggest__opt--ask .gtl-icon { color: var(--gtl-ai); }
.gtl-suggest__opt--all { border-top: 1px solid var(--gtl-line); border-radius: 0 0 var(--gtl-radius-sm) var(--gtl-radius-sm); margin-top: 4px; }
.gtl-suggest__text { display: flex; flex-direction: column; min-width: 0; }
.gtl-suggest__title { font-weight: 600; color: var(--gtl-text); }
.gtl-suggest__path { color: var(--gtl-muted); font-size: 13px; }
.gtl-suggest__none, .gtl-suggest__did { margin: 6px 12px; color: var(--gtl-muted); font-size: 14px; }
.gtl mark { padding: 0 2px; border-radius: 3px; background: var(--gtl-mark); color: inherit; }

/* ------------------------------------------------------------------ home */
.gtl-hero { position: relative; padding: 40px 0 28px; }
.gtl-hero__eyebrow { margin: 0 0 10px; color: var(--gtl-muted); font-size: 14px; font-weight: 600; }
.gtl-hero__title { margin: 0 0 12px; font-size: clamp(34px, 5vw, 54px); font-weight: 800; line-height: 1.04; letter-spacing: -0.02em; }
.gtl-hero__lead { max-width: 720px; margin: 0 0 24px; color: var(--gtl-text-soft); font-size: 19px; line-height: 1.5; }
.gtl-hero .gtl-search, .gtl-hero .gtl-search-holder { max-width: 760px; }
.gtl-hero__tags { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 16px 0 0; color: var(--gtl-muted); font-size: 14px; }
.gtl-section { margin: 40px 0 0; }
.gtl-section__title { display: flex; align-items: center; gap: 8px; margin: 0 0 16px; font-size: 22px; font-weight: 750; letter-spacing: -0.01em; }
.gtl-section__title .gtl-icon { width: 22px; height: 22px; color: var(--gtl-muted); }
.gtl-section__row { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px; }
.gtl .gtl-section__more { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; text-decoration: none; }
.gtl-section__more .gtl-icon { width: 16px; height: 16px; }
.gtl-cats { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 16px; margin: 0; padding: 0; list-style: none; }
.gtl-cat { display: flex; flex-direction: column; padding: 18px 20px 16px; border: var(--gtl-border-width) solid var(--gtl-line); border-radius: var(--gtl-radius); background: var(--gtl-surface); box-shadow: var(--gtl-shadow-sm); transition: box-shadow 0.15s ease, transform 0.15s ease; }
.gtl-cat:hover { box-shadow: var(--gtl-shadow); }
.gtl .gtl-cat__head { display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 12px; align-items: center; color: var(--gtl-text); text-decoration: none; }
.gtl-cat__icon { grid-row: 1 / 3; display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 12px; background: var(--gtl-primary-soft); color: var(--gtl-primary); }
.gtl-cat__icon .gtl-icon { width: 22px; height: 22px; }
.gtl-cat__name { font-size: 17px; font-weight: 700; line-height: 1.25; }
.gtl-cat__count { color: var(--gtl-muted); font-size: 13px; }
.gtl-cat__desc { margin: 10px 0 0; color: var(--gtl-text-soft); font-size: 14.5px; line-height: 1.45; }
.gtl-cat__list { margin: 12px 0 0; padding: 12px 0 0; border-top: 1px solid var(--gtl-line); list-style: none; font-size: 14.5px; }
.gtl-cat__list li { padding: 3px 0; }
.gtl .gtl-cat__list a { color: var(--gtl-text-soft); text-decoration: none; }
.gtl .gtl-cat__list a:hover { color: var(--gtl-link); text-decoration: underline; }
.gtl .gtl-cat__more { display: inline-flex; align-items: center; gap: 5px; margin-top: auto; padding-top: 10px; font-size: 14px; font-weight: 600; text-decoration: none; }
.gtl-cat__more .gtl-icon { width: 15px; height: 15px; }
.gtl-two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; }
.gtl-rank { margin: 0; padding: 0; list-style: none; counter-reset: gtl-rank; }
.gtl-rank li { display: flex; flex-direction: column; padding: 10px 0 10px 40px; border-bottom: 1px solid var(--gtl-line); position: relative; counter-increment: gtl-rank; }
.gtl-rank li::before { content: counter(gtl-rank); position: absolute; left: 0; top: 10px; display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 8px; background: var(--gtl-surface-2); color: var(--gtl-muted); font-weight: 700; font-size: 13px; }
.gtl-rank--plain li { padding-left: 0; }
.gtl-rank--plain li::before { display: none; }
.gtl .gtl-rank a { color: var(--gtl-text); font-weight: 600; text-decoration: none; }
.gtl .gtl-rank a:hover { color: var(--gtl-link); text-decoration: underline; }
.gtl-rank__cat { color: var(--gtl-muted); font-size: 13px; }

/* ---------------------------------------------------------- ask card */
.gtl-askcard { margin: 8px 0 0; padding: 22px 24px; border: var(--gtl-border-width) solid color-mix(in srgb, var(--gtl-ai) 35%, var(--gtl-line)); border-radius: var(--gtl-radius-lg); background: linear-gradient(135deg, var(--gtl-ai-soft), var(--gtl-surface) 70%); }
.gtl-askcard--faq { margin-top: 32px; }
.gtl-askcard__head { display: flex; align-items: flex-start; gap: 14px; }
.gtl-askcard__badge { display: inline-flex; align-items: center; justify-content: center; flex: none; width: 46px; height: 46px; border-radius: 14px; background: var(--gtl-ai); color: var(--gtl-on-ai); }
.gtl-askcard__badge .gtl-icon { width: 24px; height: 24px; }
.gtl-askcard__title { margin: 0; font-size: 20px; font-weight: 750; }
.gtl-askcard__lead { margin: 4px 0 0; color: var(--gtl-text-soft); }
.gtl-askcard__form { display: flex; gap: 10px; margin: 16px 0 0; }
.gtl .gtl-askcard__input { flex: 1; min-width: 0; min-height: 46px; margin: 0; padding: 10px 14px; border: var(--gtl-border-width) solid var(--gtl-border); border-radius: var(--gtl-radius); background: var(--gtl-surface); color: var(--gtl-text); font: inherit; font-size: 16px; }
.gtl .gtl-askcard__input:focus { border-color: var(--gtl-ai); outline: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--gtl-ai) 25%, transparent); }
.gtl-askcard .gtl-btn--ai { min-height: 46px; }

/* ------------------------------------------------------------ layouts */
.gtl-layout { display: grid; gap: 40px; align-items: start; }
.gtl-layout--article { grid-template-columns: 236px minmax(0, 1fr) 220px; }
.gtl-layout--article.gtl-layout--inapp { grid-template-columns: minmax(0, 1fr) 220px; }
.gtl-layout--list { grid-template-columns: 236px minmax(0, 1fr); }
.gtl-main { min-width: 0; max-width: 860px; }
.gtl-side { position: sticky; top: var(--gtl-sticky-top); }
.gtl-side__box > summary { list-style: none; }
.gtl-side__box > summary::-webkit-details-marker { display: none; }
.gtl-side__title { display: flex; align-items: center; justify-content: space-between; margin: 0 0 8px; color: var(--gtl-muted); font-size: 13px; font-weight: 700; letter-spacing: 0.02em; cursor: default; }
.gtl-side__chev { display: none; width: 18px; height: 18px; }
.gtl-side ul { margin: 0; padding: 0; list-style: none; }
.gtl-side ul ul { margin-left: 14px; padding-left: 8px; border-left: 1px solid var(--gtl-line); }
.gtl .gtl-side__link { display: flex; align-items: center; gap: 9px; padding: 7px 10px; border-radius: var(--gtl-radius-sm); color: var(--gtl-text-soft); font-size: 14.5px; font-weight: 550; text-decoration: none; }
.gtl .gtl-side__link:hover { background: var(--gtl-surface-2); color: var(--gtl-text); }
.gtl .gtl-side__link.is-current { background: var(--gtl-primary-soft); color: var(--gtl-text); font-weight: 700; }
.gtl-side__link .gtl-icon { width: 17px; height: 17px; color: var(--gtl-muted); }
.gtl-side__name { flex: 1; min-width: 0; }
.gtl-side__count { color: var(--gtl-muted); font-size: 12.5px; font-variant-numeric: tabular-nums; }
.gtl-side__extra { margin-top: 10px !important; padding-top: 10px !important; border-top: 1px solid var(--gtl-line); }

/* ----------------------------------------------------- page headings */
.gtl-crumbs ol { display: flex; flex-wrap: wrap; gap: 4px; margin: 0 0 14px; padding: 0; list-style: none; color: var(--gtl-muted); font-size: 14px; }
.gtl-crumbs li + li::before { content: "/"; margin-right: 4px; color: var(--gtl-line); }
.gtl .gtl-crumbs a { color: var(--gtl-muted); text-decoration: none; }
.gtl .gtl-crumbs a:hover { color: var(--gtl-link); text-decoration: underline; }
.gtl-pagehead { display: flex; align-items: flex-start; gap: 14px; margin: 0 0 22px; }
.gtl-pagehead__icon { display: inline-flex; align-items: center; justify-content: center; flex: none; width: 48px; height: 48px; border-radius: 14px; background: var(--gtl-primary-soft); color: var(--gtl-primary); }
.gtl-pagehead__icon .gtl-icon { width: 24px; height: 24px; }
.gtl-title { margin: 0; font-size: clamp(28px, 4vw, 38px); font-weight: 800; line-height: 1.12; letter-spacing: -0.015em; }
.gtl-lead { margin: 8px 0 0; color: var(--gtl-text-soft); font-size: 18px; line-height: 1.5; }

/* ------------------------------------------------------------- article */
.gtl-article { min-width: 0; max-width: 780px; }
.gtl-article__head { margin: 0 0 22px; padding: 0 0 18px; border-bottom: 1px solid var(--gtl-line); }
.gtl-article__title { margin: 0; font-size: clamp(30px, 4.4vw, 44px); font-weight: 800; line-height: 1.1; letter-spacing: -0.02em; }
.gtl-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin: 14px 0 0; color: var(--gtl-muted); font-size: 14px; }
.gtl-meta span { display: inline-flex; align-items: center; gap: 6px; }
.gtl-meta .gtl-icon { width: 16px; height: 16px; }
.gtl-meta__verified { color: var(--gtl-ok); font-weight: 600; }
.gtl-meta__sep { color: var(--gtl-line); }
.gtl-notice { display: flex; gap: 12px; margin: 0 0 22px; padding: 14px 16px; border: 1px solid color-mix(in srgb, var(--gtl-warn) 30%, var(--gtl-line)); border-radius: var(--gtl-radius); background: var(--gtl-warn-soft); color: var(--gtl-text); font-size: 15px; }
.gtl-notice .gtl-icon { width: 22px; height: 22px; color: var(--gtl-warn); }
.gtl-notice p { margin: 0; }
.gtl-editnote { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0 0 16px; padding: 10px 14px; border-radius: var(--gtl-radius-sm); background: var(--gtl-info-soft); font-size: 14px; }
.gtl-editnote .gtl-icon { width: 17px; height: 17px; }
.gtl-toc-inline { display: none; margin: 0 0 20px; padding: 12px 16px; border: 1px solid var(--gtl-line); border-radius: var(--gtl-radius); }
.gtl-toc-inline summary { font-weight: 700; cursor: pointer; }
.gtl-toc { position: sticky; top: var(--gtl-sticky-top); max-height: calc(100vh - 48px); overflow: auto; font-size: 14px; }
.gtl-toc__title { margin: 0 0 10px; color: var(--gtl-muted); font-size: 13px; font-weight: 700; letter-spacing: 0.02em; }
.gtl-toc__list { margin: 0; padding: 0; list-style: none; border-left: 2px solid var(--gtl-line); }
.gtl-toc__item a { display: block; margin-left: -2px; padding: 5px 0 5px 12px; border-left: 2px solid transparent; color: var(--gtl-muted); line-height: 1.35; text-decoration: none; }
.gtl-toc__item--3 a { padding-left: 24px; font-size: 13.5px; }
.gtl-toc__item--4 a { padding-left: 34px; font-size: 13px; }
.gtl .gtl-toc__item a:hover { color: var(--gtl-text); }
.gtl .gtl-toc__item.is-current a { border-left-color: var(--gtl-primary); color: var(--gtl-text); font-weight: 650; }
.gtl-files { margin: 32px 0 0; padding: 16px 18px; border: 1px solid var(--gtl-line); border-radius: var(--gtl-radius); background: var(--gtl-surface-2); }
.gtl-files__title { display: flex; align-items: center; gap: 8px; margin: 0 0 8px; font-size: 16px; }
.gtl-files ul { margin: 0; padding: 0; list-style: none; }
.gtl-files a { display: flex; align-items: center; gap: 8px; padding: 6px 0; text-decoration: none; }
.gtl-files a span:first-of-type { text-decoration: underline; text-underline-offset: 3px; }
.gtl-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 26px 0 0; color: var(--gtl-muted); }
.gtl-article__foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin: 36px 0 0; padding: 20px 0 0; border-top: 1px solid var(--gtl-line); }
.gtl-helpful { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.gtl-helpful__q { margin-right: 4px; color: var(--gtl-text-soft); font-weight: 600; }
.gtl-helpful--done, .gtl-helpful__done { display: inline-flex; align-items: center; gap: 6px; color: var(--gtl-ok); font-weight: 600; }
.gtl-helpful--small .gtl-btn { min-height: 30px; padding: 4px 10px; font-size: 13px; }
.gtl-asklink { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; color: var(--gtl-text-soft); }
.gtl-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 28px 0 0; }
.gtl .gtl-pager__link { display: flex; flex-direction: column; gap: 4px; padding: 14px 16px; border: var(--gtl-border-width) solid var(--gtl-line); border-radius: var(--gtl-radius); color: var(--gtl-text); text-decoration: none; }
.gtl .gtl-pager__link:hover { border-color: var(--gtl-border); background: var(--gtl-surface-2); }
.gtl-pager__link--next { text-align: right; align-items: flex-end; }
.gtl-pager__label { display: inline-flex; align-items: center; gap: 6px; color: var(--gtl-muted); font-size: 13px; font-weight: 600; }
.gtl-pager__label .gtl-icon { width: 15px; height: 15px; }
.gtl-pager__title { font-weight: 700; }
.gtl-related { margin: 36px 0 0; }
.gtl-related__title { margin: 0 0 12px; font-size: 20px; }

/* ------------------------------------------------------------- prose */
.gtl-prose { color: var(--gtl-text); font-family: var(--gtl-font-read); font-size: 17px; line-height: 1.72; overflow-wrap: break-word; }
.gtl-prose > :first-child { margin-top: 0; }
.gtl-prose p, .gtl-prose ul, .gtl-prose ol, .gtl-prose blockquote, .gtl-prose pre, .gtl-prose figure, .gtl-prose .gtl-table, .gtl-prose table, .gtl-prose .gtl-callout, .gtl-prose details { margin: 0 0 1.1em; }
.gtl-prose h2 { position: relative; margin: 2em 0 0.6em; font-family: var(--gtl-font-display); font-size: 1.55em; font-weight: 750; line-height: 1.22; letter-spacing: -0.01em; scroll-margin-top: 90px; }
.gtl-prose h3 { position: relative; margin: 1.7em 0 0.5em; font-family: var(--gtl-font-display); font-size: 1.24em; font-weight: 700; line-height: 1.3; scroll-margin-top: 90px; }
.gtl-prose h4 { margin: 1.4em 0 0.4em; font-size: 1.05em; font-weight: 700; scroll-margin-top: 90px; }
.gtl-prose ul, .gtl-prose ol { padding-left: 1.4em; }
.gtl-prose li { margin: 0.3em 0; }
.gtl-prose li > ul, .gtl-prose li > ol { margin: 0.3em 0 0.4em; }
.gtl-prose strong { font-weight: 700; color: var(--gtl-text); }
.gtl-prose code { padding: 0.12em 0.38em; border-radius: 5px; background: var(--gtl-surface-3); font-family: var(--gtl-font-mono); font-size: 0.86em; }
.gtl-prose pre { position: relative; overflow: auto; padding: 16px 18px; border-radius: var(--gtl-radius); background: #12151b; color: #e8eaf0; font-size: 14.5px; line-height: 1.6; }
.gtl-prose pre code { padding: 0; background: none; color: inherit; font-size: inherit; }
.gtl-copy { position: absolute; top: 8px; right: 8px; padding: 3px 9px; border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 6px; background: rgba(255, 255, 255, 0.08); color: #e8eaf0; font: 600 12px/1.4 var(--gtl-font); cursor: pointer; opacity: 0; transition: opacity 0.15s; }
.gtl-prose pre:hover .gtl-copy, .gtl-copy:focus-visible { opacity: 1; }
.gtl-prose blockquote { padding: 4px 0 4px 18px; border-left: 4px solid var(--gtl-line); color: var(--gtl-text-soft); }
.gtl-prose blockquote p:last-child { margin-bottom: 0; }
.gtl-prose hr { margin: 2em 0; border: 0; border-top: 1px solid var(--gtl-line); }
.gtl-prose img { max-width: 100%; height: auto; border-radius: var(--gtl-radius-sm); }
.gtl-prose figure { margin-left: 0; margin-right: 0; }
.gtl-prose figcaption { margin-top: 6px; color: var(--gtl-muted); font-size: 0.88em; text-align: center; }
.gtl-prose .gtl-table { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--gtl-line); border-radius: var(--gtl-radius-sm); }
.gtl-prose table { width: 100%; border-collapse: collapse; font-size: 0.9em; line-height: 1.5; }
.gtl-prose .gtl-table table { margin: 0; }
.gtl-prose th, .gtl-prose td { padding: 9px 12px; border-bottom: 1px solid var(--gtl-line); text-align: left; vertical-align: top; }
.gtl-prose th { background: var(--gtl-surface-2); font-weight: 700; white-space: nowrap; }
.gtl-prose tr:last-child td { border-bottom: 0; }
.gtl-prose th[align="right"], .gtl-prose td[align="right"] { text-align: right; }
.gtl-prose th[align="center"], .gtl-prose td[align="center"] { text-align: center; }
.gtl-prose details { padding: 10px 14px; border: 1px solid var(--gtl-line); border-radius: var(--gtl-radius-sm); }
.gtl-prose summary { font-weight: 650; cursor: pointer; }
.gtl-callout { position: relative; padding: 14px 16px 14px 48px; border: 1px solid var(--gtl-line); border-left: 4px solid var(--gtl-primary); border-radius: var(--gtl-radius-sm); background: var(--gtl-primary-soft); }
.gtl-callout::before { content: ""; position: absolute; left: 15px; top: 16px; width: 20px; height: 20px; background: currentColor; color: var(--gtl-primary); -webkit-mask: var(--gtl-callout-icon) center / contain no-repeat; mask: var(--gtl-callout-icon) center / contain no-repeat; }
.gtl-callout > :last-child { margin-bottom: 0; }
.gtl-callout { --gtl-callout-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M12 11v6M12 7.5h.01'/%3E%3C/svg%3E"); }
.gtl-callout--tip { border-left-color: var(--gtl-ok); background: var(--gtl-ok-soft); --gtl-callout-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9.5 18h5M10.5 21h3'/%3E%3Cpath d='M12 3a6 6 0 0 0-3.5 10.9c.6.5 1 1.2 1 2.1h5c0-.9.4-1.6 1-2.1A6 6 0 0 0 12 3z'/%3E%3C/svg%3E"); }
.gtl-callout--tip::before { color: var(--gtl-ok); }
.gtl-callout--warning { border-left-color: var(--gtl-warn); background: var(--gtl-warn-soft); --gtl-callout-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3.5L2.5 20h19z'/%3E%3Cpath d='M12 10v4.5M12 17.5h.01'/%3E%3C/svg%3E"); }
.gtl-callout--warning::before { color: var(--gtl-warn); }
.gtl-callout--danger { border-left-color: var(--gtl-danger); background: var(--gtl-danger-soft); --gtl-callout-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M15 9l-6 6M9 9l6 6'/%3E%3C/svg%3E"); }
.gtl-callout--danger::before { color: var(--gtl-danger); }
.gtl-callout--info { border-left-color: var(--gtl-ai); background: var(--gtl-ai-soft); }
.gtl-callout--info::before { color: var(--gtl-ai); }
.gtl-anchor { margin-left: 8px; color: var(--gtl-muted) !important; font-weight: 500; text-decoration: none !important; opacity: 0; transition: opacity 0.15s; }
.gtl-prose h2:hover .gtl-anchor, .gtl-prose h3:hover .gtl-anchor, .gtl-anchor:focus-visible { opacity: 1; }

/* -------------------------------------------------------------- cards */
.gtl-cards { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.gtl-cards--compact { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.gtl .gtl-card__link { display: flex; flex-direction: column; gap: 4px; padding: 15px 18px; border: var(--gtl-border-width) solid var(--gtl-line); border-radius: var(--gtl-radius); background: var(--gtl-surface); color: var(--gtl-text); text-decoration: none; transition: border-color 0.12s, box-shadow 0.12s; }
.gtl .gtl-card__link:hover { border-color: var(--gtl-border); box-shadow: var(--gtl-shadow-sm); }
.gtl-card__title { font-size: 17px; font-weight: 700; line-height: 1.3; }
.gtl-card__summary { color: var(--gtl-text-soft); font-size: 15px; line-height: 1.45; }
.gtl-card__meta { color: var(--gtl-muted); font-size: 13px; }
.gtl-libs { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; margin: 0; padding: 0; list-style: none; }
.gtl .gtl-libcard__link { display: flex; flex-direction: column; gap: 6px; height: 100%; padding: 22px; border: var(--gtl-border-width) solid var(--gtl-line); border-radius: var(--gtl-radius-lg); background: var(--gtl-surface); color: var(--gtl-text); text-decoration: none; box-shadow: var(--gtl-shadow-sm); }
.gtl .gtl-libcard__link:hover { box-shadow: var(--gtl-shadow); }
.gtl-libcard__icon { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; margin-bottom: 6px; border-radius: 14px; background: var(--gtl-primary-soft); color: var(--gtl-primary); }
.gtl-libcard__name { font-size: 20px; font-weight: 750; }
.gtl-libcard__desc { color: var(--gtl-text-soft); }
.gtl-libcard__meta { margin-top: auto; padding-top: 8px; color: var(--gtl-muted); font-size: 13.5px; }
.gtl-subcats { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 18px; padding: 0; list-style: none; }

/* ---------------------------------------------------------------- FAQ */
.gtl-faq { border-top: 1px solid var(--gtl-line); }
.gtl-faq__item { border-bottom: 1px solid var(--gtl-line); }
.gtl-faq__q { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 4px; font-size: 17px; font-weight: 650; line-height: 1.35; list-style: none; cursor: pointer; }
.gtl-faq__q::-webkit-details-marker { display: none; }
.gtl-faq__q:hover { color: var(--gtl-link); }
.gtl-faq__chev { width: 20px; height: 20px; color: var(--gtl-muted); transition: transform 0.2s ease; }
.gtl-faq__item[open] .gtl-faq__chev { transform: rotate(180deg); }
.gtl-faq__a { padding: 0 4px 18px; }
.gtl-faq__a .gtl-prose { font-size: 16px; }
.gtl-faq__sources { margin: 0 0 10px; color: var(--gtl-muted); font-size: 14px; }
.gtl-faq__foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }

/* ------------------------------------------------------------ results */
.gtl-filter { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 16px; }
.gtl-didyoumean { margin: 0 0 14px; font-size: 16px; }
.gtl-results__count { margin: 0 0 8px; font-size: 14px; }
.gtl-results { margin: 0; padding: 0; list-style: none; }
.gtl-result { padding: 16px 0; border-bottom: 1px solid var(--gtl-line); }
.gtl .gtl-result__link { text-decoration: none; }
.gtl-result__title { font-size: 18px; font-weight: 700; line-height: 1.3; }
.gtl .gtl-result__link:hover .gtl-result__title { text-decoration: underline; text-underline-offset: 3px; }
.gtl-result__path { display: flex; align-items: center; gap: 6px; margin: 4px 0 0; color: var(--gtl-muted); font-size: 13.5px; }
.gtl-result__path .gtl-icon { width: 15px; height: 15px; }
.gtl-result__snippet { margin: 6px 0 0; color: var(--gtl-text-soft); font-size: 15px; line-height: 1.55; }
.gtl-results__ask { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 20px 0 0; color: var(--gtl-text-soft); }

/* ----------------------------------------------------- empty, messages */
.gtl-empty { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 40px 20px; border: 1px dashed var(--gtl-line); border-radius: var(--gtl-radius); color: var(--gtl-muted); text-align: center; }
.gtl-empty > .gtl-icon { width: 34px; height: 34px; color: var(--gtl-muted); }
.gtl-empty p { margin: 0; max-width: 520px; }
.gtl-empty__title { color: var(--gtl-text); font-size: 17px; font-weight: 650; }
.gtl-empty .gtl-btn { margin-top: 8px; }
.gtl-message { max-width: 620px; margin: 0 auto; padding: 64px 0; text-align: center; }
.gtl-message__icon { width: 48px; height: 48px; color: var(--gtl-muted); }
.gtl-message .gtl-search { margin: 20px auto 12px; text-align: left; }
.gtl-message .gtl-lead { margin-bottom: 16px; }
.gtl-spinner { display: flex; align-items: center; gap: 10px; padding: 32px 0; color: var(--gtl-muted); }
.gtl-spinner__dot { width: 18px; height: 18px; border: 2px solid var(--gtl-line); border-top-color: var(--gtl-primary); border-radius: 50%; animation: gtl-spin 0.8s linear infinite; }
@keyframes gtl-spin { to { transform: rotate(360deg); } }
.gtl-errorbox { padding: 16px; border: 1px solid var(--gtl-danger); border-radius: var(--gtl-radius); background: var(--gtl-danger-soft); }
.gtl-status { display: inline-flex; align-items: center; padding: 1px 8px; border-radius: 999px; background: var(--gtl-surface-3); color: var(--gtl-text-soft); font-size: 12px; font-weight: 650; line-height: 19px; white-space: nowrap; vertical-align: 2px; }
.gtl-status--published, .gtl-status--imported, .gtl-status--restored { background: var(--gtl-ok-soft); color: var(--gtl-ok); }
.gtl-status--review { background: var(--gtl-warn-soft); color: var(--gtl-warn); }
.gtl-status--changed, .gtl-status--unsaved { background: var(--gtl-info-soft); color: var(--gtl-link); }
.gtl-status--archived, .gtl-status--unpublished { background: var(--gtl-surface-3); color: var(--gtl-muted); }
.gtl-status--vis, .gtl-status--aud-private, .gtl-status--aud-members, .gtl-status--aud-course { background: var(--gtl-ai-soft); color: var(--gtl-ai); }

/* -------------------------------------------------------- the librarian */
.gtl-drawer { position: fixed; inset: 0; z-index: 100050; pointer-events: none; }
.gtl-drawer__scrim { position: absolute; inset: 0; background: rgba(10, 12, 16, 0.42); opacity: 0; transition: opacity 0.25s ease; }
.gtl-drawer__panel { position: absolute; top: 0; right: 0; bottom: 0; display: flex; width: min(460px, 100vw); background: var(--gtl-surface); box-shadow: var(--gtl-shadow-lg); transform: translateX(104%); transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1); outline: none; }
.gtl-drawer.is-open { pointer-events: auto; }
.gtl-drawer.is-open .gtl-drawer__scrim { opacity: 1; }
.gtl-drawer.is-open .gtl-drawer__panel { transform: none; }
html.gtl-drawer-open { overflow: hidden; }
.gtl-librarian { display: flex; flex-direction: column; width: 100%; height: 100%; min-height: 0; color: var(--gtl-text); font-family: var(--gtl-font); font-size: 15.5px; }
.gtl-librarian--embedded { height: auto; min-height: 520px; border: var(--gtl-border-width) solid var(--gtl-line); border-radius: var(--gtl-radius-lg); }
.gtl-librarian__head { display: flex; align-items: center; gap: 12px; padding: 14px 14px 14px 18px; border-bottom: 1px solid var(--gtl-line); }
.gtl-librarian__badge { display: inline-flex; align-items: center; justify-content: center; flex: none; width: 40px; height: 40px; border-radius: 12px; background: var(--gtl-ai); color: var(--gtl-on-ai); }
.gtl-librarian__badge .gtl-icon { width: 22px; height: 22px; }
.gtl-librarian__who { flex: 1; min-width: 0; }
.gtl-librarian__title { margin: 0; font-size: 17px; font-weight: 750; }
.gtl-librarian__sub { margin: 0; overflow: hidden; color: var(--gtl-muted); font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.gtl-ai-tag { padding: 2px 8px; border: 1px solid color-mix(in srgb, var(--gtl-ai) 45%, transparent); border-radius: 999px; color: var(--gtl-ai); font-size: 11.5px; font-weight: 750; letter-spacing: 0.04em; }
.gtl-librarian__thread { flex: 1; min-height: 0; overflow-y: auto; padding: 18px; overscroll-behavior: contain; }
.gtl-msg { max-width: 92%; margin: 0 0 14px; padding: 12px 15px; border-radius: 16px; line-height: 1.55; overflow-wrap: anywhere; }
.gtl-msg p { margin: 0 0 8px; }
.gtl-msg p:last-child { margin-bottom: 0; }
.gtl-msg--ai { border: 1px solid var(--gtl-line); border-top-left-radius: 6px; background: var(--gtl-surface-2); }
.gtl-msg--me { margin-left: auto; border-top-right-radius: 6px; background: var(--gtl-primary); color: var(--gtl-on-primary); }
.gtl-msg--intro { background: var(--gtl-ai-soft); border-color: transparent; }
.gtl-msg__note { color: var(--gtl-muted); font-size: 13px; }
.gtl-msg--not_covered, .gtl-msg--unsure { border-style: dashed; }
.gtl-msg--error { border-color: var(--gtl-danger); background: var(--gtl-danger-soft); }
.gtl-msg__flag { display: flex; align-items: center; gap: 6px; color: var(--gtl-muted); font-size: 13px; font-weight: 650; }
.gtl-msg__flag .gtl-icon { width: 15px; height: 15px; }
.gtl-msg__actions { margin-top: 10px !important; }
.gtl-msg--wait { display: inline-flex; align-items: center; gap: 10px; color: var(--gtl-muted); font-size: 14px; }
.gtl-answer__text ul, .gtl-answer__text ol { margin: 6px 0 8px; padding-left: 1.3em; }
.gtl-answer__text li { margin: 3px 0; }
.gtl-cite { margin-left: 2px; font-size: 0.72em; line-height: 0; }
.gtl .gtl-cite a { display: inline-block; min-width: 1.35em; padding: 1px 3px; border: 1px solid color-mix(in srgb, var(--gtl-ai) 40%, transparent); border-radius: 5px; background: var(--gtl-ai-soft); color: var(--gtl-ai); font-weight: 750; line-height: 1.2; text-align: center; text-decoration: none; }
.gtl .gtl-cite a:hover, .gtl .gtl-cite a:focus-visible { background: var(--gtl-ai); color: var(--gtl-on-ai); }
.gtl-sources { margin: 12px 0 0; padding: 10px 0 0; border-top: 1px solid var(--gtl-line); }
.gtl-sources__title { margin: 0 0 6px !important; color: var(--gtl-muted); font-size: 12.5px; font-weight: 700; letter-spacing: 0.03em; }
.gtl-sources__list { margin: 0; padding: 0; list-style: none; }
.gtl .gtl-sources__list a { display: flex; align-items: flex-start; gap: 8px; padding: 6px 4px; border-radius: 8px; color: var(--gtl-text); text-decoration: none; }
.gtl .gtl-sources__list a:hover { background: var(--gtl-surface); }
.gtl-sources__n { display: inline-flex; align-items: center; justify-content: center; flex: none; width: 22px; height: 22px; border-radius: 6px; background: var(--gtl-ai-soft); color: var(--gtl-ai); font-size: 12px; font-weight: 750; }
.gtl-sources__text { display: flex; flex-direction: column; min-width: 0; }
.gtl-sources__name { font-size: 14px; font-weight: 650; line-height: 1.3; }
.gtl-sources__heading { color: var(--gtl-muted); font-size: 12.5px; }
.gtl-dots { display: inline-flex; gap: 4px; }
.gtl-dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--gtl-ai); animation: gtl-dot 1.2s infinite ease-in-out; }
.gtl-dots i:nth-child(2) { animation-delay: 0.15s; }
.gtl-dots i:nth-child(3) { animation-delay: 0.3s; }
@keyframes gtl-dot { 0%, 80%, 100% { opacity: 0.25; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-3px); } }
.gtl-librarian__form { display: flex; align-items: flex-end; gap: 10px; padding: 12px 14px; border-top: 1px solid var(--gtl-line); }
.gtl .gtl-librarian__form textarea { flex: 1; min-height: 46px; max-height: 160px; margin: 0; padding: 11px 13px; border: var(--gtl-border-width) solid var(--gtl-border); border-radius: 14px; background: var(--gtl-surface); color: var(--gtl-text); font: inherit; font-size: 15.5px; line-height: 1.4; resize: vertical; }
.gtl .gtl-librarian__form textarea:focus { border-color: var(--gtl-ai); outline: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--gtl-ai) 22%, transparent); }
.gtl-librarian__send { width: 46px; min-height: 46px; padding: 0; border-radius: 14px; }
.gtl-librarian__foot { margin: 0; padding: 0 16px 12px; color: var(--gtl-muted); font-size: 12px; }

/* ---------------------------------------------------------------- toasts */
.gtl-toasts { position: fixed; right: 16px; bottom: 16px; z-index: 100060; display: flex; flex-direction: column; gap: 8px; max-width: min(380px, calc(100vw - 32px)); }
.gtl-toast { padding: 11px 15px; border: 1px solid var(--gtl-line); border-radius: var(--gtl-radius); background: var(--gtl-surface); color: var(--gtl-text); box-shadow: var(--gtl-shadow-lg); font-size: 14.5px; }
.gtl-toast--success { border-left: 4px solid var(--gtl-ok); }
.gtl-toast--error { border-left: 4px solid var(--gtl-danger); }

/* ---------------------------------------------------------------- dialogs */
.gtl-dialog-backdrop { position: fixed; inset: 0; z-index: 100040; display: flex; align-items: center; justify-content: center; padding: 16px; background: rgba(10, 12, 16, 0.5); }
.gtl-dialog { display: flex; flex-direction: column; width: min(560px, 100%); max-height: calc(100vh - 32px); border: var(--gtl-border-width) solid var(--gtl-line); border-radius: var(--gtl-radius-lg); background: var(--gtl-surface); color: var(--gtl-text); box-shadow: var(--gtl-shadow-lg); }
.gtl-dialog--wide { width: min(820px, 100%); }
.gtl-dialog__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px 12px 20px; border-bottom: 1px solid var(--gtl-line); }
.gtl-dialog__title { margin: 0; font-size: 18px; }
.gtl-dialog__body { overflow: auto; padding: 16px 20px; }
.gtl-dialog__foot { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; padding: 12px 20px; border-top: 1px solid var(--gtl-line); }

/* ----------------------------------------------------------- the reader */
.gtl-reader { --gtl-sticky-top: 16px; }
.gtl-reader__body { padding-top: 20px; }
.gtl-reader--bare .gtl-bar { border-bottom: 0; }
.gtl-reader--bare .gtl-bar__inner { padding-top: 0; }
.gtl-course-library .gtl-hero { padding-top: 16px; }

/* ------------------------------------------------------------- responsive */
@media (max-width: 1180px) {
	.gtl-layout--article { grid-template-columns: 220px minmax(0, 1fr); }
	.gtl-layout--article.gtl-layout--inapp { grid-template-columns: minmax(0, 1fr); }
	.gtl-toc { display: none; }
	.gtl-toc-inline { display: block; }
}
@media (max-width: 900px) {
	.gtl-layout--article, .gtl-layout--list { grid-template-columns: minmax(0, 1fr); gap: 20px; }
	.gtl-side { position: static; }
	.gtl-side__box { padding: 10px 14px; border: 1px solid var(--gtl-line); border-radius: var(--gtl-radius); }
	.gtl-side__title { margin: 0; cursor: pointer; }
	.gtl-side__box[open] .gtl-side__title { margin-bottom: 8px; }
	.gtl-side__chev { display: block; }
	.gtl-side__box[open] .gtl-side__chev { transform: rotate(180deg); }
	.gtl-two { grid-template-columns: minmax(0, 1fr); }
	.gtl-bar__name { max-width: 60vw; }
	.gtl-bar .gtl-search, .gtl-bar .gtl-search-holder { order: 3; flex-basis: 100%; max-width: none; }
	.gtl-bar__nav { margin-left: auto; }
}
@media (max-width: 600px) {
	.gtl-site { padding: 0 16px 48px; }
	.gtl-wrap { padding-top: 18px; }
	.gtl-hero { padding: 24px 0 18px; }
	.gtl-hero__lead { font-size: 17px; }
	.gtl-search--hero { height: 54px; }
	.gtl-search--hero .gtl-search__go { display: none; }
	.gtl-askcard { padding: 18px; }
	.gtl-askcard__form { flex-direction: column; }
	.gtl-bar__link span, .gtl-bar__ask span, .gtl-bar__edit span { display: none; }
	.gtl-bar__link, .gtl-bar__ask, .gtl-bar__edit { min-width: 40px; padding: 8px; }
	.gtl-prose { font-size: 16.5px; }
	.gtl-pager { grid-template-columns: minmax(0, 1fr); }
	.gtl-pager__link--next { text-align: left; align-items: flex-start; }
	.gtl-article__foot { flex-direction: column; align-items: flex-start; }
	.gtl-msg { max-width: 100%; }
	.gtl-drawer__panel { width: 100vw; }
	.gtl-search__key { display: none; }
}
@media (prefers-reduced-motion: reduce) {
	.gtl *, .gtl-drawer__panel, .gtl-drawer__scrim { transition: none !important; animation: none !important; }
}
@media print {
	.gtl-bar, .gtl-side, .gtl-toc, .gtl-article__foot, .gtl-related, .gtl-pager, .gtl-drawer, .gtl-librarian-root { display: none !important; }
	.gtl-layout { display: block; }
}