/*
 * OHI — site institucional (useohi.com)
 * CSS único, sem framework e sem build. Uma folha só: o custo de rede da página
 * inteira é este arquivo + uma família de fonte (o resto é ui-sans-serif do
 * sistema, que não pede request nenhum).
 *
 * ponytail: dark-only de propósito. O produto é um painel escuro e a marca vive
 * em fundo escuro — um tema claro aqui seria uma segunda paleta para manter sem
 * ninguém para usar. Por isso não há prefers-color-scheme.
 */

:root {
	color-scheme: dark;

	/* --- paleta: um fundo frio quase preto + um acento único (menta) --- */
	--bg: oklch(0.165 0.011 264);
	--surface: oklch(0.201 0.012 264);
	--surface-2: oklch(0.243 0.0135 264);
	--fg: oklch(0.965 0.005 260);
	--muted: oklch(0.735 0.016 262);
	--accent: oklch(0.79 0.15 168);
	--accent-strong: oklch(0.872 0.16 165);
	--accent-fg: oklch(0.165 0.011 264);
	--border: oklch(0.302 0.014 264);
	--border-strong: oklch(0.39 0.018 264);

	/* mock de conversa — cores do app de mensagem, para o mock ler como real */
	--chat-bg: #0b141a;
	--chat-top: #1f2c33;
	--chat-in: #1f2c33;
	--chat-out: #0b5f4e;
	--chat-fg: #e9edef;
	--chat-meta: rgb(233 237 239 / 0.55);
	--chat-tick: #53bdeb;

	/* --- tipografia: uma família baixada (display) + a do sistema no corpo --- */
	--font-display: "Instrument Serif", Georgia, "Times New Roman", serif;
	--font-sans:
		ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
		"Helvetica Neue", Arial, sans-serif;
	--font-mono:
		ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

	/* escala fluida: o mesmo clamp serve 375px e 1440px, sem breakpoint de fonte */
	--fs-display: clamp(2.75rem, 1.6rem + 5vw, 5.25rem);
	--fs-h2: clamp(1.875rem, 1.25rem + 2.6vw, 3rem);
	--fs-h3: 1.0625rem;
	--fs-lead: clamp(1.0625rem, 1rem + 0.35vw, 1.25rem);
	--fs-body: 1rem;
	--fs-sm: 0.9375rem;
	--fs-xs: 0.8125rem;

	--container: 72rem;
	--gutter: clamp(1.25rem, 4vw, 2.5rem);
	--section: clamp(4.5rem, 9vw, 8rem);
	--radius: 0.625rem;
	--radius-lg: 1rem;

	--shadow-sm: 0 2px 8px oklch(0 0 0 / 0.35);
	--shadow-lg: 0 24px 48px -16px oklch(0 0 0 / 0.65), 0 2px 8px oklch(0 0 0 / 0.4);

	--ease: cubic-bezier(0.22, 0.61, 0.18, 1);
}

/* ---------------------------------------------------------------- base --- */

*,
*::before,
*::after {
	box-sizing: border-box;
}

* {
	margin: 0;
}

html {
	scroll-behavior: smooth;
	/* o header é sticky: sem isto a âncora para embaixo dele */
	scroll-padding-top: 5rem;
	-webkit-text-size-adjust: 100%;
}

body {
	background: var(--bg);
	color: var(--fg);
	font-family: var(--font-sans);
	font-size: var(--fs-body);
	line-height: 1.6;
	letter-spacing: -0.011em;
	-webkit-font-smoothing: antialiased;
	overflow-x: hidden;
}

h1,
h2 {
	font-family: var(--font-display);
	font-weight: 400;
	line-height: 1.06;
	letter-spacing: -0.02em;
	text-wrap: balance;
}

/* padrão editorial da casa: a segunda linha do título em itálico + acento */
h1 em,
h2 em {
	font-style: italic;
	color: var(--accent-strong);
}

h2 {
	font-size: var(--fs-h2);
	max-width: 20ch;
}

h3 {
	font-size: var(--fs-h3);
	font-weight: 600;
	line-height: 1.35;
	letter-spacing: -0.012em;
}

p {
	text-wrap: pretty;
}

ul,
ol {
	padding: 0;
	list-style: none;
}

a {
	color: inherit;
}

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

svg {
	display: block;
}

.container {
	max-width: var(--container);
	margin-inline: auto;
	padding-inline: var(--gutter);
}

section {
	padding-block: var(--section);
}

.eyebrow {
	font-family: var(--font-mono);
	font-size: var(--fs-xs);
	text-transform: uppercase;
	letter-spacing: 0.14em;
	color: var(--accent);
	margin-bottom: 1rem;
}

.lead {
	color: var(--muted);
	font-size: var(--fs-lead);
	line-height: 1.6;
	max-width: 52ch;
	margin-top: 1.25rem;
}

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	overflow: hidden;
	clip-path: inset(50%);
	white-space: nowrap;
}

.skip-link {
	position: absolute;
	left: -9999px;
}

.skip-link:focus {
	left: 1rem;
	top: 1rem;
	z-index: 30;
	background: var(--accent);
	color: var(--accent-fg);
	padding: 0.6rem 1.1rem;
	border-radius: var(--radius);
	font-weight: 600;
}

/* faixa alternada — separa as seções sem uma linha divisória a cada 800px */
.band {
	background: var(--surface);
	border-block: 1px solid var(--border);
}

/* ------------------------------------------------------------- botões --- */

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.5rem;
	border: 1px solid transparent;
	border-radius: var(--radius);
	padding: 0.6rem 1.15rem;
	font: inherit;
	font-size: var(--fs-sm);
	font-weight: 600;
	text-decoration: none;
	white-space: nowrap;
	cursor: pointer;
	transition:
		transform 0.18s var(--ease),
		background-color 0.18s var(--ease),
		border-color 0.18s var(--ease),
		box-shadow 0.18s var(--ease);
}

.btn:hover {
	transform: translateY(-1px);
}

.btn-accent {
	background: var(--accent);
	color: var(--accent-fg);
	box-shadow: var(--shadow-sm);
}

.btn-accent:hover {
	background: var(--accent-strong);
	box-shadow: 0 10px 28px -10px oklch(0.79 0.15 168 / 0.55);
}

.btn-outline {
	border-color: var(--border-strong);
	color: var(--fg);
	background: oklch(1 0 0 / 0.03);
}

.btn-outline:hover {
	border-color: var(--accent);
	color: var(--accent-strong);
}

.btn-ghost {
	color: var(--muted);
	font-weight: 500;
}

.btn-ghost:hover {
	color: var(--fg);
}

.btn-lg {
	padding: 0.85rem 1.75rem;
	font-size: 1.0625rem;
}

.btn-sm {
	padding: 0.42rem 0.9rem;
	font-size: var(--fs-xs);
}

/* CTA no fluxo do texto, no fim de uma seção */
.inline-cta {
	margin-top: 3rem;
	max-width: 56ch;
	color: var(--muted);
	font-size: var(--fs-sm);
}

.inline-cta a {
	color: var(--accent-strong);
	text-underline-offset: 4px;
}

.inline-cta a:hover {
	text-decoration-thickness: 2px;
}

/* ------------------------------------------------------------- header --- */

.site-header {
	position: sticky;
	top: 0;
	z-index: 20;
	background: oklch(0.165 0.011 264 / 0.72);
	backdrop-filter: blur(14px) saturate(150%);
	-webkit-backdrop-filter: blur(14px) saturate(150%);
	border-bottom: 1px solid transparent;
	transition:
		border-color 0.25s var(--ease),
		background-color 0.25s var(--ease);
}

/* só ganha a linha depois que a página rola: no topo o header some no hero */
.site-header.is-stuck {
	border-bottom-color: var(--border);
	background: oklch(0.165 0.011 264 / 0.9);
}

.header-inner {
	display: flex;
	align-items: center;
	gap: 1.25rem;
	height: 4rem;
}

.brand {
	display: inline-flex;
	align-items: center;
	gap: 0.6rem;
	text-decoration: none;
	color: var(--fg);
	flex: none;
}

.brand svg {
	width: 1.75rem;
	height: 1.75rem;
	flex: none;
}

.brand-name {
	font-family: var(--font-display);
	font-size: 1.5rem;
	line-height: 1;
	letter-spacing: 0.02em;
}

/*
 * Nav mobile: sem JS ela fica sempre visível, empilhada num painel logo
 * abaixo do header (position:absolute ancorado no .site-header, que já é
 * `position:sticky` — não precisa de mais nada pra virar containing block).
 * Só sob `.js` (marcada no <head>, antes do 1º paint) ela nasce fechada e
 * passa a depender do botão — o mesmo padrão de progressive enhancement do
 * `.js .reveal` mais abaixo neste arquivo.
 */
.site-nav {
	display: flex;
	flex-direction: column;
	gap: 0;
	margin-inline: 0;
	position: absolute;
	top: 100%;
	inset-inline: 0;
	max-height: calc(100vh - 4rem);
	overflow-y: auto;
	padding: 0.25rem var(--gutter) 1.25rem;
	background: var(--bg);
	backdrop-filter: blur(14px) saturate(150%);
	-webkit-backdrop-filter: blur(14px) saturate(150%);
	border-bottom: 1px solid var(--border);
	box-shadow: 0 12px 24px -8px oklch(0 0 0 / 0.55);
}

.site-nav a {
	color: var(--muted);
	text-decoration: none;
	font-size: var(--fs-sm);
	padding-block: 0.35rem;
	border-bottom: 1px solid transparent;
	transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.site-nav a:hover {
	color: var(--fg);
}

/* seção visível no viewport — marcada pelo IntersectionObserver do script.js */
.site-nav a.is-current {
	color: var(--fg);
	border-bottom-color: var(--accent);
}

/* painel: toque confortável (≥44px) e separador entre itens */
.site-nav a {
	display: block;
	min-height: 44px;
	padding-block: 0.75rem;
	border-bottom-color: var(--border);
}

.site-nav a:last-child {
	border-bottom: none;
}

.site-nav-help {
	color: var(--accent-strong);
}

html.js .site-nav {
	opacity: 0;
	visibility: hidden;
	transform: translateY(-0.5rem);
	pointer-events: none;
	transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0s linear 0.2s;
}

html.js.nav-open .site-nav {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
	pointer-events: auto;
	transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.nav-toggle {
	display: none;
}

html.js .nav-toggle {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 2.25rem;
	height: 2.25rem;
	padding: 0;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	background: transparent;
	color: var(--fg);
	cursor: pointer;
	flex: none;
}

html.js .nav-toggle:hover {
	border-color: var(--border-strong);
}

.nav-toggle svg {
	width: 1.375rem;
	height: 1.375rem;
	overflow: visible;
}

.nav-toggle-bar {
	fill: none;
	stroke: currentColor;
	stroke-width: 2;
	stroke-linecap: round;
	transform-origin: 12px 12px;
	transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}

html.nav-open .nav-toggle-bar-1 {
	transform: translateY(5px) rotate(45deg);
}

html.nav-open .nav-toggle-bar-2 {
	opacity: 0;
}

html.nav-open .nav-toggle-bar-3 {
	transform: translateY(-5px) rotate(-45deg);
}

.header-cta {
	margin-left: auto;
	display: flex;
	align-items: center;
	gap: 0.5rem;
}

/* no celular sobra só o CTA principal (+ o toggle, sob .js) */
.header-cta .btn-ghost {
	display: none;
}

@media (min-width: 40rem) {
	.header-cta .btn-ghost {
		display: inline-flex;
	}
}

@media (min-width: 62rem) {
	.site-nav {
		display: flex;
		flex-direction: row;
		gap: 1.5rem;
		margin-inline: auto;
		position: static;
		max-height: none;
		overflow: visible;
		padding: 0;
		background: none;
		backdrop-filter: none;
		-webkit-backdrop-filter: none;
		border-bottom: none;
		box-shadow: none;
	}

	.site-nav a {
		min-height: 0;
		padding-block: 0.35rem;
	}

	.site-nav a.site-nav-help {
		display: none;
	}

	html.js .site-nav,
	html.js.nav-open .site-nav {
		opacity: 1;
		visibility: visible;
		transform: none;
		pointer-events: auto;
		transition: none;
	}

	html.js .nav-toggle {
		display: none;
	}

	.header-cta {
		margin-left: 0;
	}
}

/* --------------------------------------------------------------- hero --- */

.hero {
	position: relative;
	isolation: isolate;
	text-align: center;
	padding-block: clamp(3.5rem, 8vw, 6.5rem) clamp(4rem, 9vw, 7rem);
	border-bottom: 1px solid var(--border);
	overflow: hidden;
}

/* fundo: dois halos de acento + grade fina. Tudo CSS — nenhuma imagem, nenhum
   byte a mais e nenhum reflow quando a página carrega. */
.hero::before,
.hero::after {
	content: "";
	position: absolute;
	z-index: -1;
	pointer-events: none;
}

.hero::before {
	inset: 0;
	background:
		radial-gradient(
			50% 46% at 50% 0%,
			oklch(0.79 0.15 168 / 0.17),
			transparent 72%
		),
		radial-gradient(
			38% 40% at 88% 26%,
			oklch(0.62 0.16 276 / 0.16),
			transparent 70%
		);
}

.hero::after {
	inset: -1px;
	background-image:
		linear-gradient(to right, oklch(1 0 0 / 0.035) 1px, transparent 1px),
		linear-gradient(to bottom, oklch(1 0 0 / 0.035) 1px, transparent 1px);
	background-size: 4.5rem 4.5rem;
	mask-image: radial-gradient(70% 62% at 50% 22%, #000, transparent 78%);
	-webkit-mask-image: radial-gradient(70% 62% at 50% 22%, #000, transparent 78%);
}

.hero h1 {
	font-size: var(--fs-display);
	margin-inline: auto;
	max-width: 16ch;
}

.hero-sub {
	font-size: var(--fs-lead);
	color: var(--muted);
	max-width: 46rem;
	margin: 1.5rem auto 0;
}

.hero-cta {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 0.75rem;
	margin-top: 2.25rem;
}

.hero-marks {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 0.6rem 2rem;
	margin-top: 2.5rem;
	color: var(--muted);
	font-size: var(--fs-sm);
}

/* recuo pendurado: a segunda linha alinha com o texto, não embaixo do ✓ */
.hero-marks li {
	position: relative;
	padding-left: 1.35rem;
	text-align: left;
}

.hero-marks li::before {
	content: "✓";
	position: absolute;
	left: 0;
	color: var(--accent);
	font-weight: 700;
}

/* no celular os dois CTAs ocupam a largura toda: empilhados com larguras
   diferentes eles leem como dois pesos diferentes, que não é o caso. */
@media (max-width: 30rem) {
	.hero-cta {
		flex-direction: column;
		align-items: stretch;
	}

	.hero-cta .btn {
		width: 100%;
	}
}

/* linha de números: a prova concreta, logo abaixo da dobra */
.figures {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 1px;
	margin-top: clamp(3rem, 6vw, 4.5rem);
	background: var(--border);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	overflow: hidden;
	text-align: left;
}

.figures li {
	background: var(--bg);
	padding: 1.25rem 1.25rem 1.4rem;
}

.figures b {
	display: block;
	font-family: var(--font-display);
	font-weight: 400;
	font-size: clamp(1.75rem, 3.6vw, 2.5rem);
	line-height: 1.1;
	color: var(--accent-strong);
}

.figures span {
	display: block;
	margin-top: 0.3rem;
	color: var(--muted);
	font-size: var(--fs-xs);
	line-height: 1.5;
}

@media (min-width: 52rem) {
	.figures {
		grid-template-columns: repeat(4, 1fr);
	}
}

/* ------------------------------------------------- cabeçalho de seção --- */

.sec-head {
	max-width: 44rem;
}

.sec-head.is-centered {
	margin-inline: auto;
	text-align: center;
}

.sec-head.is-centered h2 {
	margin-inline: auto;
}

.sec-head.is-centered .lead {
	margin-inline: auto;
}

/* ------------------------------------------------- grade de duas colunas --- */

.split {
	display: grid;
	gap: 3rem;
	margin-top: 3.5rem;
	align-items: center;
}

@media (min-width: 58rem) {
	.split {
		grid-template-columns: 1.02fr 0.98fr;
		gap: 4.5rem;
	}
}

/* ------------------------------------------------------------- passos --- */

.steps {
	display: grid;
	gap: 2rem;
	counter-reset: step;
}

.steps li {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: 1.1rem;
	align-items: start;
	counter-increment: step;
}

.steps li::before {
	content: "0" counter(step);
	font-family: var(--font-mono);
	font-size: var(--fs-xs);
	letter-spacing: 0.08em;
	color: var(--accent);
	padding-top: 0.28rem;
}

.steps p {
	color: var(--muted);
	font-size: var(--fs-sm);
	margin-top: 0.3rem;
}

/* --------------------------------------------------- mock de conversa --- */

.chat {
	background: var(--chat-bg);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	overflow: hidden;
	box-shadow: var(--shadow-lg);
	max-width: 25rem;
	width: 100%;
	margin-inline: auto;
	color: var(--chat-fg);
	letter-spacing: 0;
}

.chat-top {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	background: var(--chat-top);
	padding: 0.7rem 1rem;
}

.chat-avatar {
	width: 2.25rem;
	height: 2.25rem;
	flex: none;
	border-radius: 999px;
	background: var(--accent);
	color: var(--accent-fg);
	font-family: var(--font-display);
	font-size: 1.0625rem;
	display: grid;
	place-content: center;
}

.chat-id {
	display: flex;
	flex-direction: column;
	line-height: 1.3;
	min-width: 0;
}

.chat-id strong {
	font-size: var(--fs-sm);
	font-weight: 500;
}

.chat-id span {
	font-size: 0.75rem;
	color: var(--chat-meta);
}

.chat-body {
	display: flex;
	flex-direction: column;
	gap: 0.45rem;
	padding: 1rem;
	background-image: radial-gradient(
		rgb(255 255 255 / 0.04) 1px,
		transparent 1px
	);
	background-size: 22px 22px;
}

.msg {
	position: relative;
	max-width: 86%;
	padding: 0.5rem 0.75rem 1.2rem;
	border-radius: 0.55rem;
	font-size: 0.875rem;
	line-height: 1.45;
}

.msg.in {
	background: var(--chat-in);
	align-self: flex-start;
	border-top-left-radius: 0.15rem;
}

.msg.out {
	background: var(--chat-out);
	align-self: flex-end;
	border-top-right-radius: 0.15rem;
}

.msg .meta {
	position: absolute;
	right: 0.6rem;
	bottom: 0.35rem;
	font-size: 0.6875rem;
	color: var(--chat-meta);
	white-space: nowrap;
}

.ticks {
	color: var(--chat-tick);
	letter-spacing: -0.15em;
}

/* nota de sistema: o que a plataforma fez por trás daquela mensagem */
.chat-note {
	align-self: center;
	text-align: center;
	max-width: 92%;
	margin-top: 0.35rem;
	padding: 0.5rem 0.75rem;
	border-radius: 0.55rem;
	background: oklch(0.79 0.15 168 / 0.14);
	border: 1px solid oklch(0.79 0.15 168 / 0.32);
	font-size: 0.75rem;
	line-height: 1.45;
}

/* indicador de "digitando" — a única animação em laço da página */
.chat-typing {
	align-self: flex-start;
	display: inline-flex;
	gap: 0.28rem;
	background: var(--chat-in);
	padding: 0.65rem 0.8rem;
	border-radius: 0.55rem;
	border-top-left-radius: 0.15rem;
}

.chat-typing i {
	width: 0.4rem;
	height: 0.4rem;
	border-radius: 999px;
	background: var(--chat-meta);
	animation: blink 1.4s var(--ease) infinite;
}

.chat-typing i:nth-child(2) {
	animation-delay: 0.2s;
}

.chat-typing i:nth-child(3) {
	animation-delay: 0.4s;
}

@keyframes blink {
	0%,
	60%,
	100% {
		opacity: 0.35;
		transform: none;
	}
	30% {
		opacity: 1;
		transform: translateY(-2px);
	}
}

/* -------------------------------------------------------------- cards --- */

.cards {
	display: grid;
	gap: 1rem;
	margin-top: 3rem;
	grid-template-columns: 1fr;
}

@media (min-width: 46rem) {
	.cards {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (min-width: 64rem) {
	.cards-3 {
		grid-template-columns: repeat(3, 1fr);
	}
}

.card {
	background: var(--bg);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	padding: 1.6rem;
	transition:
		border-color 0.2s var(--ease),
		transform 0.2s var(--ease),
		background-color 0.2s var(--ease);
}

.band .card {
	background: oklch(1 0 0 / 0.02);
}

.card:hover {
	border-color: var(--border-strong);
	transform: translateY(-2px);
}

.card p {
	color: var(--muted);
	font-size: var(--fs-sm);
	margin-top: 0.5rem;
}

.card-icon {
	width: 2.25rem;
	height: 2.25rem;
	margin-bottom: 1rem;
	display: grid;
	place-content: center;
	border-radius: 0.55rem;
	background: oklch(0.79 0.15 168 / 0.14);
	color: var(--accent-strong);
}

.card-icon svg {
	width: 1.125rem;
	height: 1.125rem;
}

/* etiqueta de estado: "disponível" / "a caminho" */
.tag {
	display: inline-block;
	margin-top: 1rem;
	font-family: var(--font-mono);
	font-size: 0.6875rem;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	padding: 0.2rem 0.5rem;
	border-radius: 999px;
	border: 1px solid oklch(0.79 0.15 168 / 0.4);
	color: var(--accent-strong);
}

.tag-soon {
	border-color: var(--border-strong);
	color: var(--muted);
}

/* ---------------------------------------------------- lista de checagem --- */

.check-list {
	display: grid;
	gap: 0.9rem;
	margin-top: 1.75rem;
	color: var(--muted);
	font-size: var(--fs-sm);
}

.check-list li {
	position: relative;
	padding-left: 1.6rem;
}

.check-list li::before {
	content: "✓";
	position: absolute;
	left: 0;
	top: -0.05rem;
	color: var(--accent);
	font-weight: 700;
}

.check-list strong {
	color: var(--fg);
	font-weight: 600;
}

@media (min-width: 52rem) {
	.check-list-2 {
		grid-template-columns: 1fr 1fr;
		gap: 1.25rem 3rem;
	}
}

/* ----------------------------------------------------------- citação --- */

.pull {
	margin-top: 3rem;
	padding: 1.75rem 1.75rem 1.75rem 2rem;
	border-left: 2px solid var(--accent);
	background: linear-gradient(
		to right,
		oklch(0.79 0.15 168 / 0.07),
		transparent 65%
	);
	border-radius: 0 var(--radius) var(--radius) 0;
	max-width: 46rem;
}

.pull p {
	font-family: var(--font-display);
	font-size: clamp(1.375rem, 2.6vw, 1.875rem);
	line-height: 1.25;
	letter-spacing: -0.015em;
}

.pull footer {
	margin-top: 0.9rem;
	color: var(--muted);
	font-size: var(--fs-sm);
	max-width: 52ch;
}

/* ------------------------------------------------------------- canais --- */

.channels {
	display: grid;
	gap: 1px;
	margin-top: 3rem;
	background: var(--border);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	overflow: hidden;
}

@media (min-width: 46rem) {
	.channels {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (min-width: 68rem) {
	.channels {
		grid-template-columns: repeat(4, 1fr);
	}
}

.channel {
	background: var(--surface);
	padding: 1.75rem 1.5rem;
	transition: background-color 0.2s var(--ease);
}

.channel:hover {
	background: var(--surface-2);
}

.channel p {
	color: var(--muted);
	font-size: var(--fs-sm);
	margin-top: 0.5rem;
}

.channel .card-icon {
	margin-bottom: 0.9rem;
}

/* ----------------------------------------------------------- segmentos --- */

.audience {
	display: grid;
	gap: 2rem 3rem;
	margin-top: 3rem;
}

@media (min-width: 52rem) {
	.audience {
		grid-template-columns: repeat(3, 1fr);
	}
}

.audience h3 {
	padding-top: 1.1rem;
	border-top: 1px solid var(--border-strong);
}

.audience p {
	color: var(--muted);
	font-size: var(--fs-sm);
	margin-top: 0.5rem;
}

/* ---------------------------------------------------------- CTA final --- */

.final-cta {
	text-align: center;
	position: relative;
	isolation: isolate;
	border-block: 1px solid var(--border);
	background: var(--surface);
}

.final-cta::before {
	content: "";
	position: absolute;
	inset: 0;
	z-index: -1;
	background: radial-gradient(
		56% 100% at 50% 0%,
		oklch(0.79 0.15 168 / 0.16),
		transparent 70%
	);
}

.final-cta h2 {
	margin-inline: auto;
}

.final-cta .lead {
	margin-inline: auto;
	color: var(--muted);
}

.final-cta .hero-cta {
	margin-top: 2rem;
}

.cta-note {
	margin-top: 1.5rem;
	font-size: var(--fs-xs);
	color: var(--muted);
}

/* ---------------------------------------------------------------- FAQ --- */

.faq-list {
	margin-top: 2.5rem;
	max-width: 52rem;
	border-top: 1px solid var(--border);
}

.faq-list details {
	border-bottom: 1px solid var(--border);
}

.faq-list summary {
	cursor: pointer;
	list-style: none;
	position: relative;
	padding: 1.15rem 2.75rem 1.15rem 0;
	font-weight: 600;
	letter-spacing: -0.012em;
	transition: color 0.18s var(--ease);
}

.faq-list summary::-webkit-details-marker {
	display: none;
}

.faq-list summary:hover {
	color: var(--accent-strong);
}

.faq-list summary::after {
	content: "";
	position: absolute;
	right: 0.5rem;
	top: 50%;
	width: 0.7rem;
	height: 0.7rem;
	margin-top: -0.45rem;
	border-right: 2px solid var(--accent);
	border-bottom: 2px solid var(--accent);
	transform: rotate(45deg);
	transition: transform 0.22s var(--ease);
}

.faq-list details[open] summary::after {
	transform: rotate(-135deg);
	margin-top: -0.15rem;
}

.faq-list details p {
	color: var(--muted);
	font-size: var(--fs-sm);
	padding-bottom: 1.35rem;
	max-width: 62ch;
}

/* abertura animada onde o navegador já suporta; onde não, abre seco */
@supports (interpolate-size: allow-keywords) {
	.faq-list details::details-content {
		block-size: 0;
		overflow: hidden;
		transition:
			block-size 0.3s var(--ease),
			content-visibility 0.3s allow-discrete;
	}

	.faq-list details[open]::details-content {
		block-size: auto;
	}

	html {
		interpolate-size: allow-keywords;
	}
}

/* ------------------------------------------------------------- rodapé --- */

.site-footer {
	border-top: 1px solid var(--border);
	padding-block: 3rem 2.5rem;
	font-size: var(--fs-sm);
	color: var(--muted);
}

.footer-grid {
	display: grid;
	gap: 2.25rem;
}

@media (min-width: 46rem) {
	.footer-grid {
		grid-template-columns: 1.4fr 1fr 1fr;
		gap: 3rem;
	}
}

.footer-about p {
	margin-top: 0.9rem;
	max-width: 34ch;
}

.footer-col h2 {
	font-family: var(--font-sans);
	font-size: var(--fs-xs);
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.12em;
	color: var(--fg);
	max-width: none;
}

.footer-col ul {
	display: grid;
	gap: 0.6rem;
	margin-top: 0.9rem;
}

.footer-col a {
	text-decoration: none;
	transition: color 0.18s var(--ease);
}

.footer-col a:hover {
	color: var(--accent-strong);
}

.footer-bottom {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: 0.5rem 1.5rem;
	margin-top: 2.5rem;
	padding-top: 1.5rem;
	border-top: 1px solid var(--border);
	font-size: var(--fs-xs);
}

/* -------------------------------------------------------------- 404 --- */

.page-404 {
	min-height: 100svh;
	display: grid;
	place-content: center;
	text-align: center;
	padding: var(--gutter);
}

.page-404 h1 {
	font-size: clamp(2.5rem, 7vw, 4rem);
	margin-top: 1.5rem;
}

/* ------------------------------------------------------ scroll reveal --- */
/*
 * Só esconde quando há JS (a classe .js é posta no <html> no próprio <head>):
 * sem JS a página aparece inteira, e nenhum conteúdo depende do observer.
 * O transform é só de opacidade + Y: não muda layout, então não gera CLS.
 */
.js .reveal {
	opacity: 0;
	transform: translateY(14px);
}

.js .reveal.is-visible {
	opacity: 1;
	transform: none;
	transition:
		opacity 0.6s var(--ease) var(--d, 0s),
		transform 0.6s var(--ease) var(--d, 0s);
}

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}

	.js .reveal {
		opacity: 1;
		transform: none;
		transition: none;
	}

	.btn,
	.card,
	.channel,
	.faq-list summary::after {
		transition: none;
	}

	.btn:hover,
	.card:hover {
		transform: none;
	}

	.chat-typing i {
		animation: none;
		opacity: 0.6;
	}

	html.js .site-nav,
	html.js.nav-open .site-nav,
	.nav-toggle-bar {
		transition: none;
	}
}