/* SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
 * SPDX-License-Identifier: Apache-2.0 */

:root {
	--brand-red: #e7352c;
	--brand-purple: #7c5bd9;
	--brand-blue: #2e7fee;
	--text: #1f2328;
	--text-muted: #5c6166;
	--bg: #ffffff;
	--surface: #f7f8fa;
	--border: #e3e6ea;
	--maxw: 1100px;
	--radius: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	font-size: 17px;
	line-height: 1.65;
	-webkit-font-smoothing: antialiased;
}

a { color: var(--brand-blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* The gradient hairline carries the NEO wordmark colours across every page. */
.brandline { height: 3px; background: linear-gradient(90deg, var(--brand-red), var(--brand-purple), var(--brand-blue)); }

header.site {
	position: sticky;
	top: 0;
	z-index: 10;
	background: rgba(255, 255, 255, 0.94);
	backdrop-filter: saturate(180%) blur(8px);
	border-bottom: 1px solid var(--border);
}

header.site .wrap { display: flex; align-items: center; gap: 28px; height: 68px; }
header.site img.logo { height: 30px; width: auto; display: block; }
header.site nav { margin-left: auto; display: flex; gap: 26px; flex-wrap: wrap; }
header.site nav a { color: var(--text); font-size: 15px; font-weight: 500; }
header.site nav a:hover { color: var(--brand-blue); text-decoration: none; }

.hero { background: var(--surface); border-bottom: 1px solid var(--border); padding: 76px 0 68px; }
.hero h1 { font-size: 46px; line-height: 1.15; margin: 0 0 18px; letter-spacing: -0.02em; }
.hero p.lede { font-size: 20px; color: var(--text-muted); max-width: 760px; margin: 0 0 32px; }

.cta { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
	display: inline-block;
	padding: 12px 22px;
	border-radius: var(--radius);
	font-weight: 600;
	font-size: 16px;
	border: 1px solid transparent;
}
.btn.primary { background: var(--brand-red); color: #fff; }
.btn.primary:hover { background: #cf2b23; text-decoration: none; }
.btn.ghost { border-color: var(--border); color: var(--text); background: #fff; }
.btn.ghost:hover { border-color: var(--brand-blue); color: var(--brand-blue); text-decoration: none; }

section.block { padding: 64px 0; border-bottom: 1px solid var(--border); }
section.block.alt { background: var(--surface); }
section.block h2 { font-size: 30px; margin: 0 0 14px; letter-spacing: -0.01em; }
section.block p { max-width: 820px; color: var(--text-muted); }
section.block p strong { color: var(--text); }

.grid { display: grid; gap: 20px; margin-top: 32px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
	background: #fff;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 22px 22px 24px;
}
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; font-size: 15.5px; color: var(--text-muted); }

.company { display: grid; grid-template-columns: 200px 1fr; gap: 36px; align-items: start; }
.company img { width: 200px; height: auto; }
.company address { font-style: normal; color: var(--text-muted); margin-top: 12px; }

footer.site { background: #1b1f24; color: #c8cdd4; padding: 44px 0 32px; font-size: 15px; }
footer.site a { color: #e6eaf0; }
footer.site .cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
footer.site img.logo { height: 28px; margin-bottom: 14px; }
footer.site h4 { color: #fff; font-size: 14px; text-transform: uppercase; letter-spacing: 0.06em; margin: 0 0 12px; }
footer.site ul { list-style: none; margin: 0; padding: 0; }
footer.site li { margin-bottom: 8px; }
footer.site .legal { border-top: 1px solid #2c3238; margin-top: 32px; padding-top: 20px; color: #98a0aa; font-size: 14px; }

/* Legal pages: privacy policy and terms of use. */
.legalpage { padding: 52px 0 72px; }
.legalpage .layout { display: grid; grid-template-columns: minmax(0, 1fr) 224px; gap: 48px; align-items: start; }
.legalpage .doc { max-width: 820px; }

/* On-page section index, mirroring the right-hand column of the docs pages. */
.legalpage .toc {
	position: sticky;
	top: 92px;
	font-size: 13.5px;
	line-height: 1.45;
	border-left: 1px solid var(--border);
	padding-left: 18px;
	max-height: calc(100vh - 130px);
	overflow-y: auto;
}
.legalpage .toc a { display: block; color: var(--text-muted); margin-bottom: 12px; }
.legalpage .toc a:hover { color: var(--brand-blue); text-decoration: none; }
.legalpage h1 { font-size: 38px; margin: 0 0 8px; letter-spacing: -0.02em; }
.legalpage .updated { color: var(--text-muted); font-size: 15px; margin: 0 0 36px; }
.legalpage h2 { font-size: 24px; margin: 40px 0 12px; padding-top: 8px; }
.legalpage h3 { font-size: 18px; margin: 28px 0 8px; }
.legalpage p, .legalpage li { color: #35393f; }
.legalpage ul, .legalpage ol { padding-left: 24px; }
.legalpage li { margin-bottom: 8px; }
.legalpage table { border-collapse: collapse; width: 100%; margin: 20px 0; font-size: 15.5px; }
.legalpage th, .legalpage td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; vertical-align: top; }
.legalpage th { background: var(--surface); }

@media (max-width: 900px) {
	.legalpage .layout { grid-template-columns: 1fr; gap: 0; }
	.legalpage .toc { display: none; }
	.grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
	.company { grid-template-columns: 1fr; }
	footer.site .cols { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
	.hero h1 { font-size: 34px; }
	.hero p.lede { font-size: 18px; }
	.grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
	header.site .wrap { height: auto; padding: 12px 24px; flex-wrap: wrap; gap: 14px; }
	header.site nav { gap: 18px; }
}