/* 伏羲智搜 GEO
 * 墨底 + 青金。克制、高对比、少装饰。
 */

:root {
	--ink: #07080c;
	--ink-2: #12141c;
	--panel: #171a24;
	--line: rgba(232, 220, 196, 0.16);
	--paper: #f3ecdf;
	--muted: #a39b90;
	--gold: #c4a46a;
	--gold-2: #e7d3a1;
	--teal: #8fbfb6;
	--danger: #e07a5f;
	--serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Songti SC", "Source Han Serif SC", serif;
	--sans: "Avenir Next", "Segoe UI", "PingFang SC", "Noto Sans SC", sans-serif;
	--space: clamp(1.25rem, 2vw, 2rem);
	--radius: 18px;
	--shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

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

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	background:
		radial-gradient(900px 480px at 88% -8%, rgba(196, 164, 106, 0.18), transparent 58%),
		radial-gradient(720px 420px at -8% 18%, rgba(143, 191, 182, 0.1), transparent 52%),
		var(--ink);
	color: var(--paper);
	font-family: var(--sans);
	font-size: 17px;
	line-height: 1.7;
}

img {
	max-width: 100%;
	height: auto;
	display: block;
}

a {
	color: inherit;
	text-decoration-thickness: 1px;
	text-underline-offset: 0.2em;
}

h1, h2, h3 {
	font-family: var(--serif);
	font-weight: 500;
	letter-spacing: -0.02em;
	line-height: 1.15;
	margin: 0 0 0.6em;
}

h1 { font-size: clamp(2.6rem, 6vw, 5.2rem); }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
h3 { font-size: 1.35rem; }

p { margin: 0 0 1em; }

.shell {
	width: min(1180px, calc(100% - 2.4rem));
	margin-inline: auto;
}

.narrow { width: min(760px, calc(100% - 2.4rem)); }

.skip-link,
.sr-only {
	position: absolute;
	left: -999px;
}

.skip-link:focus {
	left: 1rem;
	top: 1rem;
	z-index: 20;
	background: var(--gold);
	color: var(--ink);
	padding: 0.4rem 0.8rem;
}

.eyebrow,
.panel-kicker,
.card-meta,
.card-index {
	font-family: var(--sans);
	letter-spacing: 0.18em;
	text-transform: uppercase;
	font-size: 0.72rem;
	color: var(--gold-2);
}

.lede {
	font-size: 1.15rem;
	color: var(--muted);
	max-width: 38rem;
}

.site-header {
	position: sticky;
	top: 0;
	z-index: 10;
	backdrop-filter: blur(16px);
	background: rgba(7, 8, 12, 0.78);
	border-bottom: 1px solid var(--line);
}

.header-inner {
	display: flex;
	align-items: center;
	gap: 1.5rem;
	min-height: 76px;
}

.brand {
	display: flex;
	align-items: center;
	gap: 0.7rem;
	margin-right: auto;
}

.brand-mark {
	width: 14px;
	height: 14px;
	border-radius: 50%;
	background: conic-gradient(from 120deg, var(--gold), var(--teal), var(--gold-2));
	box-shadow: 0 0 0 4px rgba(214, 178, 94, 0.15);
}

.brand-name,
.custom-logo-link {
	font-family: var(--serif);
	font-size: 1.25rem;
	text-decoration: none;
}

.custom-logo { height: 36px; width: auto; }

.nav-list {
	display: flex;
	gap: 1.25rem;
	list-style: none;
	margin: 0;
	padding: 0;
}

.nav-list a { text-decoration: none; color: var(--muted); }
.nav-list a:hover { color: var(--paper); }

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border: 1px solid transparent;
	border-radius: 999px;
	padding: 0.75rem 1.25rem;
	text-decoration: none;
	cursor: pointer;
	font: inherit;
}

.btn-gold {
	background: linear-gradient(180deg, var(--gold-2), var(--gold));
	color: #1a1408;
}

.btn-ghost {
	border-color: var(--line);
	color: var(--paper);
	background: transparent;
}

.nav-toggle {
	display: none;
	width: 44px;
	height: 44px;
	border: 1px solid var(--line);
	background: transparent;
	border-radius: 12px;
	padding: 12px;
}

.nav-toggle span {
	display: block;
	height: 1px;
	background: var(--paper);
	margin: 6px 0;
}

.hero { padding: 4.5rem 0 3rem; }

.hero-grid,
.split,
.consult,
.footer-grid {
	display: grid;
	grid-template-columns: 1.2fr 0.8fr;
	gap: clamp(2rem, 5vw, 4.5rem);
	align-items: start;
}

.hero-panel,
.card,
.consult-form {
	background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 40%), var(--panel);
	border: 1px solid var(--line);
	border-radius: var(--radius);
	box-shadow: var(--shadow);
}

.hero-panel { padding: 1.6rem 1.6rem 0.6rem; }

.hero-panel ol {
	list-style: none;
	margin: 1rem 0 0;
	padding: 0;
	counter-reset: item;
}

.hero-panel li {
	display: grid;
	gap: 0.2rem;
	padding: 1rem 0;
	border-top: 1px solid var(--line);
}

.hero-panel span,
.card p,
.stack-list p,
.steps p,
.footer-lead,
.contact-list,
.prose { color: var(--muted); }

.stat-row {
	display: flex;
	gap: 1.5rem;
	list-style: none;
	padding: 1.5rem 0 0;
	margin: 0.5rem 0 0;
}

.stat-row strong {
	display: block;
	font-family: var(--serif);
	font-size: 1.8rem;
	color: var(--paper);
}

.stat-row span { color: var(--muted); font-size: 0.85rem; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }

.section { padding: 4.2rem 0; }

.section-head { margin-bottom: 2rem; max-width: 40rem; }

.card-grid { display: grid; gap: 1rem; }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }

.card { padding: 1.4rem 1.4rem 1.2rem; }
.card-index { display: block; margin-bottom: 1.4rem; }

.card-case {
	min-height: 180px;
	background:
		linear-gradient(160deg, rgba(125, 206, 196, 0.14), transparent 42%),
		var(--ink-2);
}

.stack-list { list-style: none; margin: 0; padding: 0; }
.stack-list li { padding: 1.1rem 0; border-bottom: 1px solid var(--line); }

.steps {
	list-style: none;
	display: grid;
	grid-template-columns: repeat(5, 1fr);
	gap: 1rem;
	margin: 0;
	padding: 0;
}

.steps li {
	padding-top: 1rem;
	border-top: 1px solid var(--gold);
}

.steps span { display: block; color: var(--teal); font-size: 0.8rem; margin-bottom: 0.8rem; }

.band {
	border-block: 1px solid var(--line);
	background: linear-gradient(90deg, rgba(196, 164, 106, 0.08), transparent 42%), var(--ink-2);
}

.promise {
	display: grid;
	grid-template-columns: 0.7fr 1.3fr;
	gap: 2rem;
	padding: 3.2rem 0;
	align-items: center;
}

.promise ul {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 1rem;
	list-style: none;
	margin: 0;
	padding: 0;
}

.promise strong {
	display: block;
	font-family: var(--serif);
	font-size: 1.7rem;
	font-weight: 500;
	color: var(--gold-2);
}

.promise span { color: var(--muted); }

.form-note {
	color: var(--gold-2);
	border-left: 2px solid var(--gold);
	padding-left: 0.8rem;
}

.hp {
	position: absolute;
	left: -9999px;
}

.consult { align-items: stretch; }
.consult-form { padding: 1.4rem; display: grid; gap: 0.9rem; }

.consult-form label { display: grid; gap: 0.35rem; font-size: 0.85rem; color: var(--muted); }

.consult-form input,
.consult-form textarea {
	width: 100%;
	border: 1px solid var(--line);
	background: rgba(0, 0, 0, 0.25);
	color: var(--paper);
	border-radius: 12px;
	padding: 0.75rem 0.85rem;
	font: inherit;
}

.consult-form input:focus,
.consult-form textarea:focus {
	outline: 2px solid rgba(214, 178, 94, 0.55);
	border-color: transparent;
}

.site-footer {
	border-top: 1px solid var(--line);
	padding: 3.5rem 0 1.5rem;
}

.contact-list { list-style: none; margin: 0; padding: 0; }
.nav-list-stack { flex-direction: column; gap: 0.4rem; }

.footer-bar {
	display: flex;
	justify-content: space-between;
	gap: 1rem;
	margin-top: 2rem;
	padding-top: 1rem;
	border-top: 1px solid var(--line);
	color: var(--muted);
	font-size: 0.85rem;
}

.post-list { display: grid; gap: 1.5rem; }
.post-item { padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
.entry-cover { margin: 0 0 1.5rem; border-radius: var(--radius); overflow: hidden; }

.mobile-nav {
	background: var(--ink-2);
	border-bottom: 1px solid var(--line);
	padding: 1rem 1.2rem 1.4rem;
}

.mobile-nav .nav-list { flex-direction: column; }

@media (max-width: 900px) {
	.site-nav,
	.header-inner .btn { display: none; }
	.nav-toggle { display: inline-block; }
	.hero-grid,
	.split,
	.consult,
	.footer-grid,
	.card-grid-3,
	.promise,
	.promise ul,
	.steps { grid-template-columns: 1fr; }
	.stat-row { flex-wrap: wrap; }
	.footer-bar { flex-direction: column; }
}