/* ============================================================
   Yablonskyy theme — layout & component CSS
   Depends on the design tokens (colors/typography/spacing/base).
   Ports the React landing blocks to server-rendered markup.
   ============================================================ */

/* ---------- Primitives ---------- */

body { margin: 0; background: var(--bg); color: var(--text); }
img { max-width: 100%; display: block; }
button { font-family: inherit; }

.yb-wrap { max-width: var(--content-max); margin: 0 auto; padding: 0 var(--page-pad); }
.yb-section { padding-top: 120px; padding-bottom: 120px; }
.yb-section--ink { background: var(--ink); color: var(--paper); }
.yb-section--surface { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

a:focus-visible, button:focus-visible {
	outline: none;
	box-shadow: 0 0 0 3px var(--chip-accent-bg);
	border-radius: 6px;
}

/* Buttons */
.yb-btn {
	display: inline-flex; align-items: center; gap: 8px;
	font-family: var(--font-sans); font-weight: var(--weight-bold);
	font-size: 16px; line-height: 1; letter-spacing: -0.005em;
	border-radius: var(--radius-control); text-decoration: none;
	cursor: pointer; border: var(--border-control) solid transparent;
	white-space: nowrap; padding: 14px 28px;
	transition: background var(--duration-base) var(--ease-standard),
		color var(--duration-base) var(--ease-standard),
		border-color var(--duration-base) var(--ease-standard);
}
.yb-btn--sm { padding: 10px 18px; font-size: 14px; }
.yb-btn--block { width: 100%; justify-content: center; }
.yb-btn--primary { background: var(--accent-fill); color: var(--on-accent); }
.yb-btn--primary:hover { background: var(--amber-press); }
.yb-btn--secondary { background: transparent; color: var(--text); border-color: var(--text); }
.yb-btn--secondary:hover { color: var(--accent-link); border-color: var(--accent-link); }
.yb-section--ink .yb-btn--secondary,
.yb-footer .yb-btn--secondary { color: var(--paper); border-color: var(--walnut-600); }
.yb-section--ink .yb-btn--secondary:hover { color: var(--amber-light); border-color: var(--amber-light); }
.yb-btn[disabled] { opacity: 0.45; cursor: not-allowed; }

/* Chip */
.yb-chip {
	display: inline-flex; align-items: center; font-family: var(--font-mono);
	font-size: 12px; font-weight: var(--weight-medium);
	letter-spacing: var(--tracking-label-tight); text-transform: uppercase;
	padding: 7px 14px; border-radius: var(--radius-pill);
}
.yb-chip--neutral { background: var(--chip-bg); color: var(--chip-text); }
.yb-chip--accent { background: var(--chip-accent-bg); color: var(--chip-accent-text); }
.yb-chip--dark { background: var(--ink); color: var(--paper); }

/* Kicker */
.yb-kicker {
	font-family: var(--font-mono); font-size: var(--text-label);
	letter-spacing: 0.2em; text-transform: uppercase; display: block;
}
.yb-kicker--muted { color: var(--text-muted); }
.yb-kicker--accent { color: var(--accent-link); }
.yb-kicker--ondark { color: var(--walnut-300); }

/* TextLink */
.yb-textlink {
	color: var(--accent-link); font-weight: var(--weight-bold);
	text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1.5px;
}

/* Logo */
.yb-logo {
	font-family: var(--font-sans); font-weight: var(--weight-bold);
	font-size: 21px; letter-spacing: -0.03em; line-height: 1; white-space: nowrap;
}
.yb-logo--ink { color: var(--ink); }
.yb-logo--reversed { color: var(--paper); }
.yb-logo__dot { color: var(--amber); }

/* Connector motif */
.yb-connector { display: flex; align-items: center; gap: 0; width: 100%; }
.yb-connector__node { flex: none; border-radius: 50%; }
.yb-connector__node--start { width: 18px; height: 18px; }
.yb-connector__node--amber { width: 22px; height: 22px; background: var(--amber); }
.yb-connector__node--end { width: 18px; height: 18px; border: 2px solid; background: transparent; }
.yb-connector__edge { flex: 1; height: 2px; }
.yb-connector--light .yb-connector__node--start { background: var(--ink); }
.yb-connector--light .yb-connector__node--end { border-color: var(--walnut-500); }
.yb-connector--light .yb-connector__edge--in { background: linear-gradient(90deg, var(--ink), var(--amber)); }
.yb-connector--light .yb-connector__edge--out { background: linear-gradient(90deg, var(--amber), var(--walnut-400)); }
.yb-connector--dark .yb-connector__node--start { background: var(--paper); }
.yb-connector--dark .yb-connector__node--end { border-color: var(--walnut-600); }
.yb-connector--dark .yb-connector__edge--in { background: linear-gradient(90deg, var(--paper), var(--amber)); }
.yb-connector--dark .yb-connector__edge--out { background: linear-gradient(90deg, var(--amber), var(--walnut-600)); }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(18px);
	transition: opacity 640ms var(--ease-out), transform 640ms var(--ease-out); will-change: opacity, transform; }
.reveal.is-in { opacity: 1; transform: none; }
html[data-motion="off"] .reveal { opacity: 1; transform: none; transition: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- Header / nav ---------- */
.yb-nav {
	position: sticky; top: 0; z-index: 50;
	background: color-mix(in srgb, var(--bg) 84%, transparent);
	backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
	border-bottom: 1px solid transparent;
	transition: border-color var(--duration-base) var(--ease-standard);
}
.yb-nav.is-scrolled { border-bottom-color: var(--line); }
.yb-nav__inner { max-width: var(--content-max); margin: 0 auto; padding: 15px var(--page-pad);
	display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.yb-nav__links { display: flex; align-items: center; gap: 30px; }
.yb-nav__link {
	font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em;
	text-transform: uppercase; text-decoration: none; color: var(--text-muted);
	padding-bottom: 2px; border-bottom: 1.5px solid transparent;
	transition: color var(--duration-base) var(--ease-standard);
}
.yb-nav__link:hover { color: var(--accent-link); }
.yb-nav__desktop { display: flex; align-items: center; gap: 32px; }
.yb-nav__mobile { display: none; align-items: center; gap: 12px; }
.yb-nav__icon-btn {
	width: 34px; height: 34px; border-radius: 999px; cursor: pointer;
	border: 1px solid var(--line); background: var(--surface); color: var(--text);
	display: inline-flex; flex: none; align-items: center; justify-content: center;
	transition: border-color var(--duration-base) var(--ease-standard);
}
.yb-nav__icon-btn:hover { border-color: var(--accent-link); }
.yb-nav__burger { width: 38px; height: 38px; border-radius: 10px; font-size: 16px; }
.yb-theme-toggle .yb-icon-moon { display: none; }
html[data-theme="dark"] .yb-theme-toggle .yb-icon-moon { display: inline; }
html[data-theme="dark"] .yb-theme-toggle .yb-icon-sun { display: none; }
.yb-nav__panel { display: none; border-top: 1px solid var(--line); padding: 12px var(--page-pad) 20px; background: var(--bg); }
.yb-nav__panel.is-open { display: block; }
.yb-nav__panel a { display: block; padding: 12px 0; text-decoration: none;
	font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase;
	color: var(--text); border-bottom: 1px solid var(--line); }
.yb-nav__panel .yb-btn { margin-top: 16px; }

/* ---------- Hero ---------- */
.yb-hero { position: relative; padding-top: 96px; padding-bottom: 104px; overflow: hidden; }
.yb-hero__meta { display: flex; align-items: center; gap: 14px; margin-bottom: 40px; flex-wrap: wrap; }
.yb-hero__meta-note { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); }
.yb-hero__title {
	margin: 0; font-family: var(--font-condensed); font-weight: 700;
	font-size: clamp(56px, 11vw, 152px); line-height: 0.94; letter-spacing: -0.04em;
	color: var(--text); max-width: 1100px;
}
.yb-hero__title .accent { color: var(--accent-fill); }
.yb-hero__row { display: flex; gap: 56px; margin-top: 44px; align-items: flex-start; flex-wrap: wrap; }
.yb-hero__lead { margin: 0; max-width: 540px; flex: 1 1 420px; font-size: var(--text-lead); line-height: 1.5; color: var(--text-body); }
.yb-hero__cta { display: flex; flex-direction: column; gap: 16px; flex: 0 0 auto; }
.yb-hero__cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.yb-hero__cta-note { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.08em; color: var(--text-muted); }
.yb-hero__connector { margin-top: 88px; max-width: 760px; }
.yb-hero__connector-labels { display: flex; justify-content: space-between; margin-top: 14px; max-width: 760px; }
.yb-hero__connector-labels span { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-muted); }
.yb-hero__connector-labels .mid { color: var(--accent-link); }

/* ---------- Trust strip ---------- */
.yb-trust { padding-top: 8px; padding-bottom: 56px; border-bottom: 1px solid var(--line); }
.yb-trust__label { display: block; font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 26px; }
.yb-marquee { position: relative; overflow: hidden;
	-webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
	mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.yb-marquee__track { display: flex; gap: 64px; width: max-content; align-items: center; animation: yb-marquee 42s linear infinite; }
.yb-marquee:hover .yb-marquee__track { animation-play-state: paused; }
.yb-marquee__item { font-family: var(--font-sans); font-weight: 700; font-size: 26px; letter-spacing: -0.02em; color: var(--text-muted); white-space: nowrap; opacity: 0.78; }
@keyframes yb-marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
html[data-motion="off"] .yb-marquee__track { animation: none; }
@media (prefers-reduced-motion: reduce) { .yb-marquee__track { animation: none; } }

/* ---------- Stats band ---------- */
.yb-stats__head { margin-bottom: 48px; }
.yb-stats__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.yb-stat { display: flex; flex-direction: column; gap: 14px; padding-left: 24px; border-left: 1px solid var(--walnut-700); }
.yb-stat__num { font-family: var(--font-condensed); font-weight: 700; font-size: clamp(52px, 6vw, 84px); line-height: 0.92; letter-spacing: -0.03em; color: var(--paper); }
.yb-stat__num .suffix { color: var(--amber-light); }
.yb-stat__label { font-size: 15px; line-height: 1.5; color: var(--walnut-200); max-width: 220px; }

/* ---------- Section heading blocks ---------- */
.yb-head { max-width: 720px; margin-bottom: 56px; }
.yb-head .yb-kicker { margin-bottom: 20px; }
.yb-h2 { margin: 0; font-family: var(--font-sans); font-weight: 700; font-size: clamp(34px, 4.4vw, 46px); letter-spacing: -0.03em; line-height: 1.05; color: var(--text); }

/* ---------- Services bento ---------- */
.yb-bento { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 1fr; gap: 24px; }
.yb-bento__card {
	background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card);
	padding: 32px; display: flex; flex-direction: column; gap: 18px;
	transition: border-color var(--duration-base) var(--ease-standard), transform var(--duration-base) var(--ease-standard);
}
.yb-bento__card:hover { border-color: var(--accent-link); transform: translateY(-3px); }
.yb-bento__card--big, .yb-bento__card--tall { grid-column: span 2; grid-row: span 2; padding: 44px; }
.yb-bento__card--small { grid-column: span 2; }
.yb-bento__tag { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.16em; color: var(--accent-link); }
.yb-bento__title { margin: 0; font-family: var(--font-sans); font-weight: 700; font-size: 24px; letter-spacing: -0.02em; line-height: 1.1; color: var(--text); }
.yb-bento__card--big .yb-bento__title { font-size: 32px; }
.yb-bento__body { margin: 0; font-size: 16px; line-height: 1.55; color: var(--text-body); flex: 1; }
.yb-bento__card--big .yb-bento__body { font-size: 18px; }
.yb-bento__points { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }

/* ---------- Process ---------- */
.yb-process__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.yb-process__step { display: flex; flex-direction: column; gap: 18px; }
.yb-process__marker { display: flex; align-items: center; gap: 12px; }
.yb-process__dot { width: 14px; height: 14px; border-radius: 50%; flex: none; }
.yb-process__dot--ink { background: var(--ink); }
.yb-process__dot--amber { background: var(--amber); }
.yb-process__dot--ring { background: transparent; border: 2px solid var(--walnut-500); }
.yb-process__line { flex: 1; height: 2px; background: var(--line); }
.yb-process__num { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-muted); }
.yb-process__title { margin: 0; font-family: var(--font-sans); font-weight: 700; font-size: 22px; letter-spacing: -0.02em; color: var(--text); }
.yb-process__body { margin: 0; font-size: 15.5px; line-height: 1.55; color: var(--text-body); }

/* ---------- Selected work ---------- */
.yb-work__head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 56px; flex-wrap: wrap; }
.yb-work__head .yb-head { margin-bottom: 0; max-width: 680px; }
.yb-work__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.yb-work__card { text-decoration: none; display: flex; flex-direction: column; gap: 20px; padding: 20px;
	border-radius: var(--radius-card); border: 1px solid transparent;
	transition: border-color var(--duration-base) var(--ease-standard), background var(--duration-base) var(--ease-standard); }
.yb-work__card:hover { border-color: var(--line); background: var(--surface); }
.yb-work__media { aspect-ratio: 16 / 10; border-radius: 12px; overflow: hidden; border: 1px solid var(--line); }
.yb-work__media img { width: 100%; height: 100%; object-fit: cover; }
.yb-work__meta { display: flex; align-items: center; gap: 10px; }
.yb-work__metric { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.1em; color: var(--accent-link); }
.yb-work__title { margin: 0; font-family: var(--font-sans); font-weight: 700; font-size: 21px; letter-spacing: -0.02em; line-height: 1.18; color: var(--text); }
.yb-work__body { margin: 0; font-size: 15.5px; line-height: 1.55; color: var(--text-body); }

/* ---------- Courses ---------- */
.yb-courses__layout { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.yb-courses__left { display: flex; flex-direction: column; gap: 24px; }
.yb-courses__title { margin: 0; font-family: var(--font-condensed); font-weight: 700; font-size: clamp(40px, 6vw, 76px); letter-spacing: -0.035em; line-height: 0.96; color: var(--paper); }
.yb-courses__lead { margin: 0; font-size: var(--text-lead); line-height: 1.5; color: var(--walnut-200); max-width: 460px; }
.yb-courses__features { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }
.yb-courses__feature { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--walnut-200); border: 1px solid var(--walnut-700); border-radius: 999px; padding: 7px 14px; }
.yb-courses__meta-row { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
.yb-courses__meta-row .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--walnut-600); }
.yb-courses__meta { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--walnut-300); }

.yb-courses__right { display: flex; flex-direction: column; gap: 16px; }
.yb-bundle { position: relative; padding: 26px 24px; border-radius: 16px;
	background: color-mix(in srgb, var(--amber) 14%, var(--walnut-800)); border: 1.5px solid var(--amber-light); }
.yb-bundle__badge { position: absolute; top: -11px; left: 24px; padding: 3px 12px; border-radius: 999px;
	background: var(--amber-light); color: var(--ink); font-family: var(--font-mono); font-size: 10.5px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; }
.yb-bundle__name { font-family: var(--font-sans); font-weight: 700; font-size: 19px; color: var(--paper); }
.yb-bundle__pricing { display: flex; align-items: baseline; gap: 12px; margin-top: 6px; flex-wrap: wrap; }
.yb-bundle__price { font-family: var(--font-condensed); font-weight: 700; font-size: 52px; line-height: 0.9; letter-spacing: -0.03em; color: var(--amber-light); }
.yb-bundle__was { font-family: var(--font-mono); font-size: 14px; letter-spacing: 0.08em; color: var(--walnut-300); text-decoration: line-through; }
.yb-bundle__save { font-family: var(--font-mono); font-size: 11.5px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--amber-light); }
.yb-bundle__cta { margin-top: 18px; width: 100%; padding: 14px 20px; border-radius: 10px; cursor: pointer; border: none;
	background: var(--amber); color: var(--ink); font-family: var(--font-sans); font-weight: 700; font-size: 15.5px;
	transition: background var(--duration-base) var(--ease-standard); }
.yb-bundle__cta:hover { background: var(--amber-light); }

.yb-courses__divider { display: flex; align-items: center; gap: 14px; margin: 2px 0; }
.yb-courses__divider span:first-child, .yb-courses__divider span:last-child { flex: 1; height: 1px; background: var(--walnut-700); }
.yb-courses__divider em { font-style: normal; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--walnut-500); }

.yb-lessons { display: flex; flex-direction: column; gap: 10px; }
.yb-lesson { display: flex; align-items: center; gap: 16px; padding: 14px 18px; text-align: left; cursor: pointer; width: 100%;
	background: var(--walnut-800); border: 1px solid var(--walnut-700); border-radius: 12px; color: var(--paper);
	transition: border-color var(--duration-base) var(--ease-standard), background var(--duration-base) var(--ease-standard); }
.yb-lesson.is-on { background: color-mix(in srgb, var(--amber) 10%, var(--walnut-800)); border-color: var(--amber-light); }
.yb-lesson__check { flex: none; width: 22px; height: 22px; border-radius: 6px; border: 1.5px solid var(--walnut-600); background: transparent;
	color: var(--ink); display: inline-flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; }
.yb-lesson.is-on .yb-lesson__check { border: none; background: var(--amber); }
.yb-lesson__check::after { content: ""; }
.yb-lesson.is-on .yb-lesson__check::after { content: "\2713"; }
.yb-lesson__body { display: flex; flex-direction: column; gap: 3px; flex: 1; min-width: 0; }
.yb-lesson__row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.yb-lesson__num { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; color: var(--amber-light); }
.yb-lesson__title { font-family: var(--font-sans); font-weight: 700; font-size: 15.5px; color: var(--paper); }
.yb-lesson__pop { font-family: var(--font-mono); font-size: 9.5px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink); background: var(--amber-light); border-radius: 999px; padding: 2px 8px; }
.yb-lesson__sub { font-size: 13px; color: var(--walnut-300); }
.yb-lesson__price { font-family: var(--font-condensed); font-weight: 700; font-size: 22px; letter-spacing: -0.02em; color: var(--paper); flex: none; }
.yb-lesson.is-on .yb-lesson__price { color: var(--amber-light); }

.yb-cart { margin-top: 6px; padding: 18px 20px; border-radius: 12px; background: var(--walnut-900); border: 1px solid var(--walnut-700);
	display: flex; flex-direction: column; gap: 14px; }
.yb-cart__row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.yb-cart__count { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--walnut-300); }
.yb-cart__total { font-family: var(--font-condensed); font-weight: 700; font-size: 30px; letter-spacing: -0.02em; color: var(--paper); }
.yb-cart__bar { height: 5px; border-radius: 999px; background: var(--walnut-700); overflow: hidden; }
.yb-cart__bar-fill { width: 0; height: 100%; background: var(--amber-light); border-radius: 999px; transition: width var(--duration-slow) var(--ease-standard); }
.yb-cart__nudge { display: none; align-items: center; gap: 8px; text-align: left; cursor: pointer; background: none; border: none; padding: 0;
	font-family: var(--font-sans); font-size: 13.5px; line-height: 1.45; color: var(--walnut-200); }
.yb-cart__nudge.is-visible { display: flex; }
.yb-cart__nudge .arrow { flex: none; color: var(--amber-light); }
.yb-cart__nudge u { color: var(--amber-light); text-underline-offset: 3px; }
.yb-cart__enroll { width: 100%; padding: 13px 20px; border-radius: 10px; cursor: pointer; border: 1.5px solid var(--walnut-600);
	background: transparent; color: var(--paper); font-family: var(--font-sans); font-weight: 700; font-size: 15px;
	transition: border-color var(--duration-base) var(--ease-standard), color var(--duration-base) var(--ease-standard); }
.yb-cart__enroll:hover:not([disabled]) { border-color: var(--amber-light); color: var(--amber-light); }
.yb-cart__enroll[disabled] { color: var(--walnut-500); opacity: 0.6; cursor: not-allowed; }

/* ---------- Principles ---------- */
.yb-principles__grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.yb-principle { padding: 36px 28px 36px 0; display: flex; flex-direction: column; gap: 16px; }
.yb-principle__num { font-family: var(--font-condensed); font-weight: 700; font-size: 30px; letter-spacing: -0.02em; color: var(--accent-fill); }
.yb-principle__title { margin: 0; font-family: var(--font-sans); font-weight: 700; font-size: 23px; letter-spacing: -0.02em; color: var(--text); }
.yb-principle__body { margin: 0; font-size: 15.5px; line-height: 1.55; color: var(--text-body); }

/* ---------- About ---------- */
.yb-about__layout { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 64px; align-items: center; }
.yb-about__media { aspect-ratio: 4 / 5; border-radius: 16px; overflow: hidden; border: 1px solid var(--line); background: repeating-linear-gradient(135deg, #ECE4D6 0 14px, #F1EBDF 14px 28px); display: flex; align-items: flex-end; padding: 16px; }
.yb-about__media img { width: 100%; height: 100%; object-fit: cover; }
.yb-about__media-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--walnut-500); }
.yb-about__text { display: flex; flex-direction: column; gap: 24px; }
.yb-about__text h2 { margin: 0; font-family: var(--font-sans); font-weight: 700; font-size: clamp(30px, 3.8vw, 40px); letter-spacing: -0.03em; line-height: 1.1; color: var(--text); }
.yb-about__lead { margin: 0; font-size: var(--text-lead); line-height: 1.55; color: var(--text-body); }
.yb-about__p { margin: 0; font-size: 16.5px; line-height: 1.6; color: var(--text-body); }
.yb-about__p i { font-weight: 700; }
.yb-about__connector { margin-top: 8px; max-width: 320px; }

/* ---------- Testimonials ---------- */
.yb-quotes__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.yb-quote { margin: 0; padding: 36px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card); display: flex; flex-direction: column; gap: 24px; }
.yb-quote__mark { font-family: var(--font-condensed); font-weight: 700; font-size: 56px; line-height: 0.5; color: var(--accent-fill); }
.yb-quote blockquote { margin: 0; font-size: 18px; line-height: 1.5; color: var(--text); letter-spacing: -0.01em; }
.yb-quote figcaption { margin-top: auto; display: flex; flex-direction: column; gap: 4px; }
.yb-quote__role { font-family: var(--font-sans); font-weight: 700; font-size: 14.5px; color: var(--text); }
.yb-quote__org { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); }

/* ---------- FAQ ---------- */
.yb-faq__layout { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 56px; align-items: start; }
.yb-faq__intro h2 { margin: 0; font-family: var(--font-sans); font-weight: 700; font-size: clamp(30px, 3.8vw, 42px); letter-spacing: -0.03em; line-height: 1.08; color: var(--text); }
.yb-faq__intro .yb-kicker { margin-bottom: 20px; }
.yb-faq__intro p { margin: 20px 0 0; font-size: 16px; line-height: 1.6; color: var(--text-body); }
.yb-faq__item { border-bottom: 1px solid var(--line); }
.yb-faq__q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 26px 0;
	background: none; border: none; cursor: pointer; text-align: left; color: var(--text); }
.yb-faq__q-text { font-family: var(--font-sans); font-weight: 700; font-size: 19px; letter-spacing: -0.01em; }
.yb-faq__icon { flex: none; width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--line);
	display: inline-flex; align-items: center; justify-content: center; font-size: 16px; color: var(--accent-link);
	transition: transform var(--duration-base) var(--ease-standard); }
.yb-faq__item.is-open .yb-faq__icon { transform: rotate(45deg); }
.yb-faq__a { max-height: 0; overflow: hidden; transition: max-height var(--duration-slow) var(--ease-standard); }
.yb-faq__item.is-open .yb-faq__a { max-height: 320px; }
.yb-faq__a p { margin: 0; padding: 0 48px 28px 0; font-size: 16.5px; line-height: 1.6; color: var(--text-body); max-width: 720px; }

/* ---------- Final CTA ---------- */
.yb-cta { text-align: center; }
.yb-cta__connector { max-width: 560px; margin: 0 auto 40px; }
.yb-cta__title { margin: 0 auto; max-width: 980px; font-family: var(--font-condensed); font-weight: 700; font-size: clamp(44px, 8vw, 104px); line-height: 0.96; letter-spacing: -0.035em; color: var(--paper); }
.yb-cta__lead { margin: 28px auto 40px; max-width: 540px; font-size: var(--text-lead); line-height: 1.5; color: var(--walnut-200); }
.yb-cta__actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.yb-footer { background: var(--walnut-900); color: var(--walnut-300); padding: 96px 0 44px; }
.yb-footer__connector { margin-bottom: 60px; }
.yb-footer__grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1fr; gap: 40px; align-items: start; }
.yb-footer__brand { display: flex; flex-direction: column; gap: 16px; max-width: 340px; }
.yb-footer__wordmark { font-family: var(--font-sans); font-weight: 700; font-size: 23px; letter-spacing: -0.03em; color: var(--paper); }
.yb-footer__wordmark .dot { color: var(--amber); }
.yb-footer__tagline { font-size: 15.5px; line-height: 1.62; color: var(--walnut-300); }
.yb-footer__col { display: flex; flex-direction: column; gap: 15px; }
.yb-footer__col-title { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--walnut-500); }
.yb-footer__col a { font-size: 15px; color: var(--walnut-200); text-decoration: none; transition: color var(--duration-base) var(--ease-standard); }
.yb-footer__col a:hover { color: var(--amber-light); }
.yb-footer__base { margin-top: 68px; padding-top: 28px; border-top: 1px solid var(--walnut-700); display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.yb-footer__base span { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; color: var(--walnut-500); }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
	:root { --page-pad: 32px; }
	.yb-bento { grid-template-columns: repeat(2, 1fr); }
	.yb-bento__card--big, .yb-bento__card--tall, .yb-bento__card--small { grid-column: span 1; grid-row: auto; }
	.yb-stats__grid { grid-template-columns: repeat(2, 1fr); gap: 36px 32px; }
	.yb-process__grid { grid-template-columns: repeat(2, 1fr); gap: 40px 28px; }
	.yb-work__grid, .yb-quotes__grid { grid-template-columns: 1fr 1fr; }
	.yb-principles__grid { grid-template-columns: repeat(2, 1fr); }
	.yb-courses__layout, .yb-about__layout, .yb-faq__layout { grid-template-columns: 1fr; gap: 48px; }
	.yb-footer__grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 720px) {
	:root { --page-pad: 22px; }
	.yb-nav__desktop { display: none; }
	.yb-nav__mobile { display: flex; }
	.yb-bento, .yb-stats__grid, .yb-process__grid, .yb-work__grid, .yb-quotes__grid, .yb-principles__grid, .yb-footer__grid { grid-template-columns: 1fr; }
	.yb-footer__base { flex-direction: column; align-items: flex-start; gap: 10px; }
	.yb-section, .yb-hero { padding-top: 80px; padding-bottom: 80px; }
}