/* ==========================================================================
   CodeIn Science — brand layer (v2.0)
   Loaded after every Edplus stylesheet. Uses logical properties so it also
   works in Arabic (RTL).
   ========================================================================== */

/* 1. Tokens ---------------------------------------------------------------- */
:root {
	--cis-ink: #0E2A42;      /* text, dark sections */
	--cis-navy: #1E547D;     /* brand primary (logo circle) */
	--cis-navy-2: #2A6A9A;   /* hover / lighter navy */
	--cis-sky: #9CCBEA;      /* circuit traces */
	--cis-sky-soft: #E4F0F9;
	--cis-bulb: #FFD24A;     /* the idea: used sparingly */
	--cis-bulb-deep: #E8B620;
	--cis-paper: #F3F7FA;    /* cool light background */
	--cis-line: #D9E4EE;
	--cis-text: #3E566B;
	--cis-muted: #6A8196;
	--cis-white: #fff;

	--cis-radius-s: 8px;
	--cis-radius: 14px;
	--cis-radius-l: 22px;
	--cis-shadow: 0 1px 2px rgba(14, 42, 66, .06), 0 8px 24px rgba(14, 42, 66, .06);
	--cis-shadow-up: 0 2px 4px rgba(14, 42, 66, .08), 0 18px 40px rgba(14, 42, 66, .12);
	--cis-font: "Lexend", system-ui, -apple-system, "Segoe UI", "Noto Sans Arabic", Tahoma, sans-serif;
	--cis-wrap: 1240px;

	/* Edplus variables, remapped to the brand so every old section follows. */
	--title: var(--cis-ink);
	--body: var(--cis-text);
	--blue: var(--cis-navy);
	--green: var(--cis-navy);
	--yellow: var(--cis-bulb);
	--gray: var(--cis-paper);
	--rating: #F5A524;
	--box-shadow: var(--cis-shadow);
}

/* 2. Base ------------------------------------------------------------------ */
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
	font-family: var(--cis-font);
	color: var(--cis-text);
	font-size: 16px;
	line-height: 1.65;
	background: var(--cis-white);
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5, h6 {
	font-family: var(--cis-font);
	color: var(--cis-ink);
	letter-spacing: -0.015em;
	line-height: 1.2;
	font-weight: 600;
}
a { color: var(--cis-navy); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--cis-ink); }
::selection { background: var(--cis-bulb); color: var(--cis-ink); }
img { max-width: 100%; height: auto; }

:focus-visible {
	outline: 3px solid var(--cis-bulb);
	outline-offset: 2px;
	border-radius: 4px;
}

.screen-reader-text {
	position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
	overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* 3. Buttons (new + every Edplus button) ----------------------------------- */
.cis-btn,
.blue_btn, .border_btn, .fbtn,
.tutor-btn-primary, .tutor-btn.tutor-btn-primary,
.woocommerce a.button, .woocommerce button.button, .woocommerce input.button,
.woocommerce #respond input#submit, .wp-block-button__link,
input[type="submit"], button[type="submit"] {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: .5rem;
	min-height: 48px;
	padding: 0 1.4rem;
	border-radius: var(--cis-radius-s);
	border: 1.5px solid var(--cis-navy);
	background: var(--cis-navy);
	color: var(--cis-white);
	font-family: var(--cis-font);
	font-weight: 500;
	font-size: 15.5px;
	line-height: 1;
	text-decoration: none;
	cursor: pointer;
	transition: background-color .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}
.cis-btn:hover,
.blue_btn:hover, .blue_btn:focus, .fbtn:hover,
.tutor-btn-primary:hover,
.woocommerce a.button:hover, .woocommerce button.button:hover,
input[type="submit"]:hover, button[type="submit"]:hover {
	background: var(--cis-ink);
	border-color: var(--cis-ink);
	color: var(--cis-white);
}
.cis-btn:active { transform: translateY(1px); }
.blue_btn::before, .border_btn::before { display: none; } /* old sweep effect */
.cis-btn .cis-ico { width: 18px; height: 18px; }

.cis-btn--ghost, .border_btn {
	background: transparent;
	color: var(--cis-navy);
}
.cis-btn--ghost:hover, .border_btn:hover { background: var(--cis-sky-soft); color: var(--cis-ink); border-color: var(--cis-navy); }

.cis-btn--bulb { background: var(--cis-bulb); border-color: var(--cis-bulb); color: var(--cis-ink); font-weight: 600; }
.cis-btn--bulb:hover { background: #fff; border-color: #fff; color: var(--cis-ink); }

.cis-btn--line { background: transparent; border-color: rgba(255,255,255,.45); color: #fff; }
.cis-btn--line:hover { background: rgba(255,255,255,.1); border-color: #fff; color: #fff; }

.cis-btn--block { width: 100%; }

.cis-link {
	display: inline-flex; align-items: center; gap: .35rem;
	font-weight: 500; color: var(--cis-navy); text-decoration: underline;
	text-decoration-color: var(--cis-sky); text-decoration-thickness: 2px;
}
.cis-link:hover { text-decoration-color: var(--cis-navy); }

.cis-actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.cis-ico { flex-shrink: 0; }

/* 4. Header (Edplus markup, restyled) -------------------------------------- */
#navigation {
	position: sticky;
	top: 0;
	z-index: 999;
	background: rgba(255, 255, 255, .94);
	-webkit-backdrop-filter: saturate(160%) blur(10px);
	backdrop-filter: saturate(160%) blur(10px);
	border-bottom: 1px solid var(--cis-line);
}
.admin-bar #navigation { top: 32px; }
@media (max-width: 782px) { .admin-bar #navigation { top: 0; } }

.header-top { background: var(--cis-ink); color: rgba(255,255,255,.8); font-size: 13.5px; padding: 6px 0; }
.header-top a, .header-top p, .header-top i { color: rgba(255,255,255,.85); }
.header-top a:hover { color: var(--cis-bulb); }

.main-header { padding: 10px 0; }
.site-logo img { max-height: 54px; width: auto; }

#main-menu li { padding: 10px 12px; }
#main-menu li a {
	font-weight: 500;
	font-size: 15.5px;
	color: var(--cis-ink);
	position: relative;
}
#main-menu > ul > li > a::after,
#main-menu > div > ul > li > a::after {
	content: "";
	position: absolute;
	inset-inline: 0;
	bottom: -6px;
	height: 2px;
	border-radius: 2px;
	background: var(--cis-bulb);
	transform: scaleX(0);
	transition: transform .2s ease;
}
#main-menu li:hover > a::after,
#main-menu li.current-menu-item > a::after,
#main-menu li.current-menu-ancestor > a::after { transform: scaleX(1); }
#main-menu li.current-menu-item > a,
#main-menu li:hover > a { color: var(--cis-navy); }

#navigation #main-menu ul li ul {
	border-radius: var(--cis-radius);
	border: 1px solid var(--cis-line);
	box-shadow: var(--cis-shadow-up);
	padding: 8px;
}
#navigation #main-menu ul li ul li a { border-radius: var(--cis-radius-s); padding: 9px 12px; }
#navigation #main-menu ul li ul li a:hover { background: var(--cis-paper); color: var(--cis-navy); }

.search_btn, .cart_btn {
	background: var(--cis-paper);
	color: var(--cis-ink);
	width: 44px; height: 44px; line-height: 44px;
	border: 1px solid var(--cis-line);
}
.search_btn:hover, .cart_btn:hover { background: var(--cis-sky-soft); color: var(--cis-navy); }
.cart_btn span { background: var(--cis-bulb) !important; color: var(--cis-ink) !important; }

/* Mobile menu (meanmenu / slicknav) */
.mean-container .mean-bar { background: transparent; }
.mean-container .mean-nav { background: #fff; border-top: 1px solid var(--cis-line); }
.mean-container .mean-nav ul li a { color: var(--cis-ink); border-top: 1px solid var(--cis-line); font-family: var(--cis-font); }
.mean-container a.meanmenu-reveal span { background: var(--cis-ink); }
.offcanvas__info { background: var(--cis-ink) !important; }

/* Preloader */
.preloader_wrap { background: var(--cis-paper) !important; }
.preloader_wrap .pre_logo { width: 90px; height: 90px; }

/* 5. Page banners from Edplus --------------------------------------------- */
.breadcrumb-area, .page-banner, .banner-area, [class*="page_banner"] {
	background-color: var(--cis-ink) !important;
}

/* 6. Footer ---------------------------------------------------------------- */
.footer-area {
	background: var(--cis-ink) !important;
	background-image: none !important;
	color: rgba(255,255,255,.72);
	padding-top: 72px;
	position: relative;
}
.footer-area h1, .footer-area h2, .footer-area h3, .footer-area h4, .footer-area h5,
.footer-area .widget-title, .footer-area .widget h2 { color: #fff; font-size: 17px; }
.footer-area a, .footer-area p, .footer-area li { color: rgba(255,255,255,.72); }
.footer-area a:hover { color: var(--cis-bulb); }
.footer-area .copyright { border-top: 1px solid rgba(255,255,255,.12); padding: 22px 0; margin-top: 40px; }
.footer-area .copyright p { margin: 0; font-size: 14px; }
.footer-area .foot_logo img { max-height: 48px; width: auto; }
.footer-area input[type="email"], .footer-area input[type="text"] {
	background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18); color: #fff; border-radius: var(--cis-radius-s);
}

/* Scroll-to-top */
.scrolltotop, #scrollUp, .scroll-top, .progress-wrap { background: var(--cis-navy) !important; color: #fff !important; }

/* 7. Forms ----------------------------------------------------------------- */
input[type="text"], input[type="email"], input[type="url"], input[type="password"],
input[type="search"], input[type="tel"], input[type="number"], select, textarea {
	font-family: var(--cis-font);
	border: 1.5px solid var(--cis-line);
	border-radius: var(--cis-radius-s);
	background: #fff;
	color: var(--cis-ink);
	transition: border-color .15s ease, box-shadow .15s ease;
}
input:focus, select:focus, textarea:focus {
	border-color: var(--cis-navy);
	box-shadow: 0 0 0 4px rgba(30, 84, 125, .12);
	outline: none;
}

/* 8. Tutor LMS & WooCommerce accents -------------------------------------- */
:root {
	--tutor-color-primary: #1E547D;
	--tutor-color-primary-rgb: 30, 84, 125;
	--tutor-color-primary-hover: #0E2A42;
	--tutor-color-primary-hover-rgb: 14, 42, 66;
	--tutor-body-color: #3E566B;
	--tutor-border-color: #D9E4EE;
}
.tutor-course-card, .tutor-card {
	border: 1px solid var(--cis-line) !important;
	border-radius: var(--cis-radius) !important;
	box-shadow: none !important;
	transition: box-shadow .2s ease, transform .2s ease;
}
.tutor-course-card:hover { box-shadow: var(--cis-shadow-up) !important; transform: translateY(-3px); }
.tutor-progress-bar-fill, .tutor-progress-value { background: var(--cis-navy) !important; }
.woocommerce span.onsale { background: var(--cis-bulb); color: var(--cis-ink); }
.woocommerce .price, .woocommerce-Price-amount { color: var(--cis-ink); font-weight: 600; }

/* 9. Layout helpers -------------------------------------------------------- */
.cis-wrap {
	width: 100%;
	max-width: var(--cis-wrap);
	margin-inline: auto;
	padding-inline: clamp(16px, 4vw, 32px);
}
.cis-section { padding-block: clamp(56px, 8vw, 104px); }
.cis-section--paper { background: var(--cis-paper); }
.cis-section--ink { background: var(--cis-ink); color: rgba(255,255,255,.75); }
.cis-section--ink h2, .cis-section--ink h3 { color: #fff; }
.cis-section--ink .cis-link { color: #fff; text-decoration-color: var(--cis-bulb); }
.cis-section__head {
	display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
	gap: .75rem 2rem; margin-bottom: clamp(24px, 3vw, 40px);
}
.cis-section__head h2 { font-size: clamp(26px, 3.2vw, 38px); margin: 0; max-width: 22ch; }

.cis-crumbs {
	display: flex; flex-wrap: wrap; gap: .45rem; align-items: center;
	font-size: 14px; color: var(--cis-muted); margin-bottom: 1rem;
}
.cis-crumbs a { color: inherit; text-decoration: none; }
.cis-crumbs a:hover { color: var(--cis-navy); text-decoration: underline; }
.cis-crumbs [aria-current] { color: var(--cis-ink); }

.cis-admin-hint {
	border: 1.5px dashed var(--cis-sky); border-radius: var(--cis-radius);
	padding: 22px; color: var(--cis-text); background: var(--cis-sky-soft);
}

/* 10. Home: hero ----------------------------------------------------------- */
.cis-hero {
	background: var(--cis-ink);
	color: rgba(255,255,255,.78);
	overflow: hidden;
	position: relative;
}
.cis-hero::after {
	/* faint grid, like squared exercise paper */
	content: ""; position: absolute; inset: 0; pointer-events: none;
	background-image:
		linear-gradient(rgba(156,203,234,.06) 1px, transparent 1px),
		linear-gradient(90deg, rgba(156,203,234,.06) 1px, transparent 1px);
	background-size: 28px 28px;
	mask-image: linear-gradient(90deg, transparent, #000 55%);
	-webkit-mask-image: linear-gradient(90deg, transparent, #000 55%);
}
.cis-hero__grid {
	position: relative; z-index: 1;
	display: grid;
	grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
	align-items: center;
	gap: clamp(24px, 4vw, 64px);
	padding-block: clamp(56px, 8vw, 110px);
}
.cis-hero h1 {
	color: #fff;
	font-size: clamp(38px, 5.6vw, 70px);
	font-weight: 600;
	line-height: 1.04;
	letter-spacing: -0.03em;
	margin: 0 0 22px;
	max-width: 13ch;
}
.cis-hero__lead { font-size: clamp(17px, 1.6vw, 19px); max-width: 46ch; margin: 0 0 32px; }
.cis-hero__facts {
	display: flex; flex-wrap: wrap; gap: 14px 40px;
	margin: 40px 0 0; padding-top: 24px;
	border-top: 1px solid rgba(255,255,255,.14);
}
.cis-hero__facts div { display: flex; align-items: baseline; gap: 8px; }
.cis-hero__facts dt { color: #fff; font-size: 26px; font-weight: 600; }
.cis-hero__facts dd { margin: 0; font-size: 15px; }
.cis-hero__photo { border-radius: var(--cis-radius-l); width: 100%; object-fit: cover; aspect-ratio: 5 / 4; }

/* The circuit bulb: the one orchestrated moment on the site */
.cis-circuit { width: 100%; height: auto; display: block; overflow: visible; }
.cis-circuit__traces path { stroke: var(--cis-sky); stroke-dasharray: 1; stroke-dashoffset: 0; }
.cis-circuit__nodes circle { stroke: var(--cis-sky); }
.cis-circuit__labels text { fill: #fff; font-family: var(--cis-font); font-size: 17px; font-weight: 500; }
.cis-circuit__bulb { fill: var(--cis-bulb); }
.cis-circuit__code { stroke: var(--cis-ink); }
.cis-circuit__base { fill: var(--cis-sky); }
.cis-circuit__glow { opacity: 1; }

@media (prefers-reduced-motion: no-preference) {
	.cis-circuit__traces path { stroke-dashoffset: 1; animation: cis-draw 1.1s cubic-bezier(.6,.05,.3,1) .25s forwards; }
	.cis-circuit__traces path:nth-child(2), .cis-circuit__traces path:nth-child(4) { animation-delay: .4s; }
	.cis-circuit__traces path:nth-child(5), .cis-circuit__traces path:nth-child(6) { animation-delay: .55s; }
	.cis-circuit__nodes circle { fill: var(--cis-ink); animation: cis-node .3s ease 1.25s forwards; }
	.cis-circuit__labels text { opacity: 0; animation: cis-fade .5s ease 1.35s forwards; }
	.cis-circuit__bulb { fill: #24405A; animation: cis-light .5s ease 1.3s forwards; }
	.cis-circuit__code { stroke: #3B6385; animation: cis-code .5s ease 1.3s forwards; }
	.cis-circuit__glow { opacity: 0; animation: cis-fade .9s ease 1.35s forwards; }
}
.cis-circuit__nodes circle { fill: var(--cis-sky); }
@keyframes cis-draw { to { stroke-dashoffset: 0; } }
@keyframes cis-node { from { fill: var(--cis-ink); } to { fill: var(--cis-sky); } }
@keyframes cis-fade { to { opacity: 1; } }
@keyframes cis-light { to { fill: var(--cis-bulb); } }
@keyframes cis-code { to { stroke: var(--cis-ink); } }

/* 11. Home: subject strip -------------------------------------------------- */
.cis-subject-strip { border-bottom: 1px solid var(--cis-line); background: #fff; }
.cis-subject-strip .cis-wrap { display: flex; align-items: center; gap: 20px; padding-block: 18px; }
.cis-subject-strip__label { font-size: 14px; color: var(--cis-muted); white-space: nowrap; }
.cis-subject-strip ul {
	display: flex; gap: 8px; list-style: none; margin: 0; padding: 0;
	overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch;
}
.cis-subject-strip ul::-webkit-scrollbar { display: none; }
.cis-subject-strip a {
	display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
	padding: 8px 14px; border-radius: 999px;
	border: 1px solid var(--cis-line); color: var(--cis-ink); text-decoration: none; font-size: 15px;
}
.cis-subject-strip a span { font-size: 12.5px; color: var(--cis-muted); }
.cis-subject-strip a:hover { border-color: var(--cis-navy); background: var(--cis-sky-soft); }

/* 12. Cards ---------------------------------------------------------------- */
.cis-grid-cards {
	display: grid;
	grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr));
	gap: clamp(16px, 2.2vw, 28px);
}
.cis-lib-main .cis-grid-cards { --cols: 3; }

.cis-card { display: flex; flex-direction: column; min-width: 0; }
.cis-card__media {
	position: relative; display: block; overflow: hidden;
	border-radius: var(--cis-radius);
	background: var(--cis-paper);
	aspect-ratio: 16 / 9;
}
.cis-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.cis-card:hover .cis-card__media img { transform: scale(1.03); }
.cis-card__placeholder {
	position: absolute; inset: 0; display: grid; place-items: center;
	background: linear-gradient(135deg, var(--cis-navy), var(--cis-ink)); color: var(--cis-sky);
}
.cis-card__placeholder .cis-ico { width: 40px; height: 40px; }

.cis-card__play {
	position: absolute; inset-inline-start: 14px; bottom: 14px;
	width: 46px; height: 46px; border-radius: 50%;
	display: grid; place-items: center;
	background: var(--cis-bulb); color: var(--cis-ink);
	box-shadow: 0 6px 18px rgba(14,42,66,.25);
	transition: transform .2s ease;
}
.cis-card__play .cis-ico { width: 22px; height: 22px; margin-inline-start: 2px; }
.cis-card:hover .cis-card__play { transform: scale(1.08); }
.cis-card__time {
	position: absolute; inset-inline-end: 12px; bottom: 12px;
	background: rgba(14,42,66,.85); color: #fff; font-size: 12.5px; font-weight: 500;
	padding: 3px 8px; border-radius: 6px; font-variant-numeric: tabular-nums;
}
.cis-card__lock {
	position: absolute; inset-inline-end: 12px; top: 12px;
	width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
	background: #fff; color: var(--cis-ink);
}
.cis-card__lock .cis-ico { width: 16px; height: 16px; }

/* PDFs: a paper sheet instead of a screen */
.cis-card--pdf .cis-card__media {
	background:
		radial-gradient(circle at 1px 1px, rgba(30,84,125,.12) 1px, transparent 0) 0 0 / 14px 14px,
		var(--cis-sky-soft);
	display: grid; place-items: center;
}
.cis-card--pdf .cis-card__media img {
	width: auto; height: 86%; margin-top: 7%; object-fit: contain;
	box-shadow: 0 10px 24px rgba(14,42,66,.18); border-radius: 3px; background: #fff;
}
.cis-sheet {
	width: 38%; height: 82%; background: #fff; border-radius: 4px;
	box-shadow: 0 10px 24px rgba(14,42,66,.14);
	padding: 14% 9% 0; display: flex; flex-direction: column; gap: 9%;
	position: relative;
}
.cis-sheet::before { content: ""; position: absolute; top: 0; inset-inline-end: 0; border: 9px solid; border-color: var(--cis-sky-soft) var(--cis-sky-soft) var(--cis-line) var(--cis-line); }
.cis-sheet span { display: block; height: 4px; border-radius: 2px; background: var(--cis-line); }
.cis-sheet span:first-child { background: var(--cis-navy); width: 70%; height: 6px; }
.cis-sheet span:last-child { width: 55%; }
.cis-card__ext {
	position: absolute; inset-inline-start: 12px; top: 12px;
	background: var(--cis-ink); color: #fff; font-size: 11.5px; font-weight: 600; letter-spacing: .04em;
	padding: 4px 8px; border-radius: 6px;
}

.cis-card__body { padding: 14px 2px 0; }
.cis-card__subject { font-size: 13.5px; color: var(--cis-navy); text-decoration: none; font-weight: 500; }
.cis-card__subject:hover { text-decoration: underline; }
.cis-card__title { font-size: 18px; font-weight: 600; line-height: 1.3; margin: 4px 0 8px; }
.cis-card__title a { color: var(--cis-ink); text-decoration: none; }
.cis-card__title a:hover { color: var(--cis-navy); }
.cis-card__title a::after { content: ""; position: absolute; inset: 0; } /* whole card clickable */
.cis-card { position: relative; }
.cis-card__subject { position: relative; z-index: 1; }
.cis-card__meta { display: flex; flex-wrap: wrap; gap: 4px 14px; margin: 0; font-size: 13.5px; color: var(--cis-muted); }
.cis-card__format { display: inline-flex; align-items: center; gap: 5px; }
.cis-card__format .cis-ico { width: 16px; height: 16px; }

/* 13. Home: PDF shelf ------------------------------------------------------ */
.cis-shelf { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(28px, 5vw, 80px); align-items: start; }
.cis-shelf__intro h2 { font-size: clamp(26px, 3.2vw, 38px); margin: 0 0 14px; max-width: 16ch; }
.cis-shelf__intro p { max-width: 42ch; margin-bottom: 24px; }
.cis-shelf__list { list-style: none; margin: 0; padding: 0; background: #fff; border: 1px solid var(--cis-line); border-radius: var(--cis-radius); }
.cis-shelf__list li {
	position: relative;
	display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 4px 16px;
	padding: 18px 20px;
}
.cis-shelf__list li + li { border-top: 1px solid var(--cis-line); }
.cis-shelf__list li:hover { background: var(--cis-paper); }
.cis-shelf__ico { grid-row: span 2; width: 42px; height: 42px; border-radius: 10px; display: grid; place-items: center; background: var(--cis-sky-soft); color: var(--cis-navy); }
.cis-shelf__title { font-weight: 600; color: var(--cis-ink); text-decoration: none; line-height: 1.35; }
.cis-shelf__title::after { content: ""; position: absolute; inset: 0; }
.cis-shelf__meta { grid-column: 2; font-size: 13.5px; color: var(--cis-muted); display: flex; gap: 6px; }
.cis-shelf__meta span + span::before { content: "\2022"; margin-inline-end: 6px; color: var(--cis-line); }
.cis-shelf__lock { grid-row: 1 / span 2; grid-column: 3; color: var(--cis-muted); }

/* 14. Home: steps (a real sequence) --------------------------------------- */
.cis-steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: clamp(16px, 3vw, 40px); }
.cis-steps li { counter-increment: step; padding-top: 26px; border-top: 2px solid var(--cis-line); position: relative; }
.cis-steps li::before {
	content: counter(step);
	position: absolute; top: -17px; inset-inline-start: 0;
	width: 32px; height: 32px; border-radius: 50%;
	display: grid; place-items: center;
	background: var(--cis-navy); color: #fff; font-weight: 600; font-size: 15px;
}
.cis-steps li:first-child { border-top-color: var(--cis-bulb); }
.cis-steps h3 { font-size: 20px; margin: 0 0 8px; }
.cis-steps p { margin: 0; max-width: 34ch; }

/* 15. Home: courses -------------------------------------------------------- */
.cis-courses { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: clamp(16px, 2.2vw, 28px); }
.cis-course { display: flex; flex-direction: column; text-decoration: none; border-radius: var(--cis-radius); overflow: hidden; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); transition: background-color .2s ease, border-color .2s ease; }
.cis-course:hover { background: rgba(255,255,255,.09); border-color: rgba(156,203,234,.4); }
.cis-course__img { aspect-ratio: 16 / 9; background: var(--cis-navy); display: block; }
.cis-course__img img { width: 100%; height: 100%; object-fit: cover; }
.cis-course__body { padding: 18px 20px 22px; display: flex; flex-direction: column; gap: 6px; }
.cis-course__body strong { color: #fff; font-size: 18px; font-weight: 600; line-height: 1.3; }
.cis-course__body span { color: rgba(255,255,255,.7); font-size: 14.5px; }

/* 16. Home: teacher & CTA -------------------------------------------------- */
.cis-teacher { display: grid; grid-template-columns: minmax(0, 360px) minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); align-items: center; }
.cis-teacher__photo img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 50%; background: var(--cis-paper); border: 10px solid var(--cis-paper); }
.cis-teacher__text h2 { font-size: clamp(28px, 3.4vw, 40px); margin: 0 0 4px; }
.cis-teacher__role { color: var(--cis-navy); font-weight: 500; margin-bottom: 18px; }
.cis-teacher__text p:not(.cis-teacher__role) { font-size: 18px; max-width: 52ch; }

.cis-cta { background: var(--cis-navy); color: rgba(255,255,255,.82); }
.cis-cta__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px 48px; padding-block: clamp(40px, 6vw, 64px); }
.cis-cta h2 { color: #fff; font-size: clamp(24px, 3vw, 34px); margin: 0 0 6px; }
.cis-cta p { margin: 0; max-width: 52ch; }

/* 17. Library -------------------------------------------------------------- */
.cis-lib-head { background: var(--cis-paper); border-bottom: 1px solid var(--cis-line); padding-block: clamp(32px, 5vw, 56px); }
.cis-lib-title { font-size: clamp(32px, 4.4vw, 52px); letter-spacing: -0.025em; margin: 0 0 10px; }
.cis-lib-intro { font-size: 18px; max-width: 58ch; margin: 0 0 26px; }
.cis-search {
	display: flex; align-items: center; gap: 10px; max-width: 640px;
	background: #fff; border: 1.5px solid var(--cis-line); border-radius: 12px;
	padding: 6px 6px 6px 16px; padding-inline: 16px 6px;
	transition: border-color .15s ease, box-shadow .15s ease;
}
.cis-search:focus-within { border-color: var(--cis-navy); box-shadow: 0 0 0 4px rgba(30,84,125,.12); }
.cis-search .cis-ico { color: var(--cis-muted); }
.cis-search input { flex: 1; min-width: 0; border: 0 !important; box-shadow: none !important; padding: 10px 0; font-size: 16px; background: transparent; }
.cis-search button { min-height: 44px; }

.cis-lib-body { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); padding-block: 40px 88px; }
.cis-side-title { font-size: 15px; font-weight: 600; margin: 0 0 12px; color: var(--cis-ink); }
.cis-subjects { list-style: none; margin: 0; padding: 0; position: sticky; top: 100px; }
.cis-subjects a {
	display: flex; justify-content: space-between; gap: 10px;
	padding: 9px 12px; border-radius: var(--cis-radius-s);
	color: var(--cis-text); text-decoration: none; font-size: 15px;
}
.cis-subjects a span { color: var(--cis-muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.cis-subjects a:hover { background: var(--cis-paper); color: var(--cis-ink); }
.cis-subjects a[aria-current] { background: var(--cis-ink); color: #fff; }
.cis-subjects a[aria-current] span { color: var(--cis-sky); }

.cis-toolbar { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.cis-tabs { display: inline-flex; padding: 4px; background: var(--cis-paper); border: 1px solid var(--cis-line); border-radius: 12px; }
.cis-tabs a {
	display: inline-flex; align-items: center; gap: 6px;
	padding: 8px 14px; border-radius: 9px; font-size: 15px; font-weight: 500;
	color: var(--cis-text); text-decoration: none;
}
.cis-tabs a .cis-ico { width: 17px; height: 17px; }
.cis-tabs a[aria-current] { background: #fff; color: var(--cis-ink); box-shadow: 0 1px 3px rgba(14,42,66,.12); }
.cis-selects { display: flex; gap: 8px; flex-wrap: wrap; margin: 0; }
.cis-selects select { height: 44px; padding: 0 36px 0 12px; padding-inline: 12px 36px; font-size: 15px; }
.cis-count { font-size: 14px; color: var(--cis-muted); margin: 0 0 22px; }

.cis-empty { text-align: center; padding: 64px 20px; border: 1.5px dashed var(--cis-line); border-radius: var(--cis-radius); }
.cis-empty > .cis-ico { width: 40px; height: 40px; color: var(--cis-sky); }
.cis-empty h2 { font-size: 22px; margin: 12px 0 6px; }
.cis-empty .cis-btn { margin: 14px 4px 0; }

.cis-pager { margin-top: 48px; display: flex; justify-content: center; }
.cis-pager .page-numbers {
	display: inline-grid; place-items: center; min-width: 42px; height: 42px; padding: 0 12px; margin: 0 3px;
	border-radius: var(--cis-radius-s); border: 1px solid var(--cis-line); color: var(--cis-ink); text-decoration: none;
}
.cis-pager .page-numbers.current { background: var(--cis-ink); border-color: var(--cis-ink); color: #fff; }
.cis-pager a.page-numbers:hover { border-color: var(--cis-navy); color: var(--cis-navy); }

/* 18. Lesson --------------------------------------------------------------- */
.cis-lesson { padding-block: 32px 96px; }
.cis-lesson-head h1 { font-size: clamp(28px, 3.8vw, 44px); letter-spacing: -0.02em; margin: 0 0 14px; max-width: 28ch; }
.cis-lesson-meta { list-style: none; margin: 0 0 28px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 14.5px; color: var(--cis-muted); }
.cis-lesson-meta li { display: inline-flex; align-items: center; gap: 6px; }
.cis-lesson-meta .cis-ico { width: 17px; height: 17px; color: var(--cis-navy); }

.cis-lesson-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: clamp(24px, 4vw, 48px); align-items: start; }

.cis-player { position: relative; aspect-ratio: 16 / 9; background: var(--cis-ink); border-radius: var(--cis-radius); overflow: hidden; }
.cis-player video, .cis-player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; background: #000; }
.cis-facade { position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; border: 0; cursor: pointer; background: var(--cis-ink); display: block; }
.cis-facade img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cis-facade__play {
	position: absolute; inset: 0; margin: auto; width: 84px; height: 84px; border-radius: 50%;
	display: grid; place-items: center; background: var(--cis-bulb); color: var(--cis-ink);
	box-shadow: 0 10px 30px rgba(14,42,66,.35); transition: transform .2s ease;
}
.cis-facade__play .cis-ico { width: 36px; height: 36px; margin-inline-start: 4px; }
.cis-facade:hover .cis-facade__play, .cis-facade:focus-visible .cis-facade__play { transform: scale(1.08); }
.cis-player__empty { position: absolute; inset: 0; display: grid; place-items: center; color: rgba(255,255,255,.75); padding: 20px; text-align: center; }

.cis-pdf { background: var(--cis-paper); border: 1px solid var(--cis-line); border-radius: var(--cis-radius); overflow: hidden; }
.cis-pdf__bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 12px 10px 16px; border-bottom: 1px solid var(--cis-line); background: #fff; }
.cis-pdf__name { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; color: var(--cis-ink); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cis-pdf__name small { color: var(--cis-muted); font-weight: 400; }
.cis-pdf__tools { display: inline-flex; gap: 6px; }
.cis-icon-btn { width: 40px; height: 40px; display: inline-grid; place-items: center; border-radius: var(--cis-radius-s); border: 1px solid var(--cis-line); background: #fff; color: var(--cis-ink); cursor: pointer; padding: 0; }
.cis-icon-btn:hover { border-color: var(--cis-navy); color: var(--cis-navy); }
.cis-pdf__frame { display: block; width: 100%; height: min(82vh, 900px); border: 0; background: var(--cis-paper); }
.cis-pdf:fullscreen .cis-pdf__frame { height: calc(100vh - 62px); }
.cis-pdf__mobile { display: none; margin: 16px; }

.cis-locked { text-align: center; padding: clamp(40px, 6vw, 72px) 24px; border-radius: var(--cis-radius); background: var(--cis-ink); color: rgba(255,255,255,.78); }
.cis-locked h2 { color: #fff; font-size: 24px; margin: 14px 0 8px; }
.cis-locked p { margin-bottom: 24px; }
.cis-locked .cis-actions { justify-content: center; }
.cis-locked .cis-btn--ghost { color: #fff; border-color: rgba(255,255,255,.4); }
.cis-locked .cis-btn--ghost:hover { background: rgba(255,255,255,.1); }
.cis-locked__icon { display: inline-grid; place-items: center; width: 60px; height: 60px; border-radius: 50%; background: var(--cis-bulb); color: var(--cis-ink); }
.cis-locked__icon .cis-ico { width: 26px; height: 26px; }

.cis-download { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; margin-top: 16px; padding: 16px 18px; border: 1px solid var(--cis-line); border-radius: var(--cis-radius); background: #fff; }
.cis-download strong { color: var(--cis-ink); font-weight: 600; display: block; }
.cis-download span { font-size: 14px; color: var(--cis-muted); }

.cis-prose { margin-top: 32px; font-size: 17px; max-width: 72ch; }
.cis-prose h2 { font-size: 26px; margin: 1.6em 0 .5em; }
.cis-prose h3 { font-size: 21px; margin: 1.4em 0 .4em; }
.cis-prose pre, .cis-prose code { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-size: .92em; }
.cis-prose pre { margin: 1.4em 0; background: var(--cis-ink); color: #E4F0F9; padding: 18px 20px; border-radius: var(--cis-radius-s); overflow-x: auto; }
.cis-prose :not(pre) > code { background: var(--cis-sky-soft); color: var(--cis-ink); padding: .1em .35em; border-radius: 4px; }
.cis-prose blockquote { border-inline-start: 4px solid var(--cis-bulb); margin: 1.5em 0; padding: .2em 0 .2em 1.1em; padding-inline-start: 1.1em; color: var(--cis-ink); }

.cis-prevnext { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 44px; }
.cis-prevnext a { display: flex; flex-direction: column; gap: 4px; padding: 16px 18px; border: 1px solid var(--cis-line); border-radius: var(--cis-radius); color: var(--cis-ink); font-weight: 600; text-decoration: none; }
.cis-prevnext a:hover { border-color: var(--cis-navy); background: var(--cis-paper); }
.cis-prevnext small { font-weight: 400; color: var(--cis-muted); font-size: 13px; }
.cis-prevnext__next { grid-column: 2; text-align: end; }
.cis-comments { margin-top: 48px; }

.cis-lesson-side { position: sticky; top: 100px; display: grid; gap: 16px; }
.cis-side-box { border: 1px solid var(--cis-line); border-radius: var(--cis-radius); padding: 18px; background: #fff; }
.cis-related { list-style: none; margin: 0 0 12px; padding: 0; }
.cis-related a { display: flex; gap: 12px; align-items: flex-start; padding: 10px 0; text-decoration: none; }
.cis-related li + li a { border-top: 1px solid var(--cis-line); }
.cis-related strong { display: block; color: var(--cis-ink); font-weight: 500; font-size: 15px; line-height: 1.35; }
.cis-related small { color: var(--cis-muted); font-size: 13px; }
.cis-related a:hover strong { color: var(--cis-navy); }
.cis-related__ico { flex-shrink: 0; width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center; background: var(--cis-sky-soft); color: var(--cis-navy); }
.cis-related__ico--video { background: var(--cis-bulb); color: var(--cis-ink); }
.cis-related__ico .cis-ico { width: 17px; height: 17px; }

.cis-toast {
	position: fixed; inset-inline-start: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px);
	background: var(--cis-ink); color: #fff; padding: 10px 16px; border-radius: 10px; font-size: 14.5px;
	opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .2s ease; z-index: 10000;
}
.cis-toast.is-on { opacity: 1; transform: translateX(-50%) translateY(0); }
[dir="rtl"] .cis-toast { transform: translateX(50%) translateY(20px); }
[dir="rtl"] .cis-toast.is-on { transform: translateX(50%) translateY(0); }

/* 19. Responsive ----------------------------------------------------------- */
@media (max-width: 1100px) {
	.cis-lib-main .cis-grid-cards, .cis-grid-cards { --cols: 2; }
	.cis-lesson-grid { grid-template-columns: minmax(0, 1fr); }
	.cis-lesson-side { position: static; grid-template-columns: 1fr 1fr; align-items: start; }
}
@media (max-width: 900px) {
	.cis-hero__grid { grid-template-columns: 1fr; }
	.cis-hero__art { max-width: 460px; margin-inline: auto; width: 100%; order: -1; margin-bottom: -10px; }
	.cis-hero h1 { max-width: 16ch; }
	.cis-shelf, .cis-teacher { grid-template-columns: 1fr; }
	.cis-teacher__photo { max-width: 240px; }
	.cis-steps, .cis-courses { grid-template-columns: 1fr; }
	.cis-steps { gap: 36px; }
	.cis-lib-body { grid-template-columns: 1fr; padding-top: 24px; }
	.cis-lib-side { margin-inline: calc(-1 * clamp(16px, 4vw, 32px)); padding-inline: clamp(16px, 4vw, 32px); overflow-x: auto; scrollbar-width: none; }
	.cis-lib-side::-webkit-scrollbar { display: none; }
	.cis-lib-side .cis-side-title { display: none; }
	.cis-subjects { position: static; display: flex; gap: 6px; }
	.cis-subjects a { white-space: nowrap; border: 1px solid var(--cis-line); border-radius: 999px; padding: 8px 14px; }
}
@media (max-width: 640px) {
	.cis-grid-cards, .cis-lib-main .cis-grid-cards { --cols: 1; }
	.cis-lesson-side { grid-template-columns: 1fr; }
	.cis-subject-strip__label { display: none; }
	.cis-toolbar { flex-direction: column; align-items: stretch; }
	.cis-tabs { display: flex; }
	.cis-tabs a { flex: 1; justify-content: center; }
	.cis-selects select { flex: 1; }
	.cis-selects label { flex: 1; display: flex; }
	.cis-search button { padding: 0 14px; }
	.cis-pdf__frame { display: none; }
	.cis-pdf__mobile { display: inline-flex; width: calc(100% - 32px); }
	.cis-prevnext { grid-template-columns: 1fr; }
	.cis-prevnext__next { grid-column: auto; }
	.cis-hero__facts { gap: 10px 24px; }
	.cis-hero .cis-actions .cis-btn { flex: 1 1 100%; }
	.site-logo img { max-height: 44px; }
}

/* 20. Motion preferences --------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
	.wow { visibility: visible !important; animation: none !important; }
}

/* 21. Print: lessons print cleanly ----------------------------------------- */
@media print {
	#navigation, .footer-area, .cis-lesson-side, .cis-download, .cis-prevnext, .cis-comments, .cis-pdf__bar { display: none !important; }
	.cis-lesson-grid { display: block; }
}