/* Key Feature Page — 与 Product 页共享深色变量与排版 */
:root {
	--bg: #06090d;
	--bg-soft: #0d131a;
	--card: #111925;
	--text: #edf2f7;
	--muted: #9fb1c4;
	--brand: #2dc7cf;
	--brand-2: #5fdfe5;
	--line: #203144;
	--max-width: 1160px;
	--shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

body {
	margin: 0;
	font-family: "Noto Sans SC", sans-serif;
	color: var(--text);
	background: radial-gradient(1400px 700px at 80% -10%, rgba(45, 199, 207, 0.2), transparent 50%),
		linear-gradient(180deg, #04070b 0%, #091018 70%, #0a121b 100%);
	line-height: 1.65;
}

.container {
	width: min(var(--max-width), 92vw);
	margin: 0 auto;
}

h1, h2, h3, h4 {
	font-family: "Montserrat", sans-serif;
	line-height: 1.2;
}

/* ── Hero ───────────────────────────────────────────────────────────── */
.feat-hero {
	padding: 72px 0 56px;
	border-bottom: 1px solid var(--line);
}

.feat-hero-grid {
	display: grid;
	grid-template-columns: 1.1fr 0.9fr;
	gap: 40px;
	align-items: center;
}

.feat-eyebrow {
	margin-bottom: 18px;
}

.feat-eyebrow-inner {
	display: inline-flex;
	align-items: center;
	padding: 8px 14px;
	border-radius: 999px;
	background: rgba(45, 199, 207, 0.08);
	border: 1px solid rgba(45, 199, 207, 0.2);
	color: var(--brand-2);
	font-family: "Montserrat", sans-serif;
	font-size: 0.82rem;
	font-weight: 600;
	letter-spacing: 0.05em;
	text-transform: none;
}

.feat-hero h1 {
	margin: 0 0 18px;
	font-size: clamp(1.85rem, 4.5vw, 2.75rem);
	font-weight: 700;
	color: #ffffff;
	letter-spacing: -0.02em;
}

.feat-hero-lead {
	color: var(--muted);
	font-size: 1.05rem;
	max-width: 760px;
}

.feat-hero-lead p {
	margin: 0 0 14px;
}

.feat-hero-lead p:last-child {
	margin-bottom: 0;
}

.feat-hero-highlight {
	margin-top: 16px;
	color: #ffffff;
	font-size: 1.02rem;
	max-width: 760px;
}

.feat-hero-highlight p {
	margin: 0 0 12px;
}

.feat-hero-highlight p:last-child {
	margin-bottom: 0;
}

.feat-hero-stats {
	margin-top: 28px;
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 16px;
}

.feat-stat {
	background: linear-gradient(165deg, rgba(18, 28, 42, 0.86), rgba(11, 17, 26, 0.86));
	border: 1px solid var(--line);
	border-radius: 14px;
	padding: 18px 16px 16px;
	box-shadow: var(--shadow);
}

.feat-stat-label {
	color: var(--muted);
	font-size: 13px;
	margin-bottom: 8px;
	font-family: "Noto Sans SC", sans-serif;
}

.feat-stat-value {
	font-size: 1.15rem;
	font-weight: 700;
	color: #ffffff;
	line-height: 1.25;
	font-family: "Montserrat", sans-serif;
}

.feat-hero-visual {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
}

.feat-hero-image-wrap {
	width: 100%;
}

.feat-hero-image-wrap img {
	width: 100%;
	height: auto;
	display: block;
	object-fit: contain;
}

/* ── Highlights ──────────────────────────────────────────────────── */
.feat-highlights {
	padding: 50px 0;
	border-top: 1px solid var(--line);
}

.feat-highlights-title {
	margin: 0 0 24px;
	font-size: 1.6rem;
	color: var(--brand-2);
	font-weight: 600;
}

.feat-highlights-grid {
	display: grid;
	gap: 16px;
}

.feat-highlights-grid[data-count="1"] { grid-template-columns: 1fr; }
.feat-highlights-grid[data-count="2"] { grid-template-columns: repeat(2, 1fr); }
.feat-highlights-grid[data-count="3"] { grid-template-columns: repeat(3, 1fr); }
.feat-highlights-grid[data-count="4"] { grid-template-columns: repeat(4, 1fr); }

.feat-highlights-card {
	background: var(--card);
	border: 1px solid var(--line);
	border-radius: 12px;
	padding: 24px;
	display: flex;
	flex-direction: column;
	gap: 10px;
}

.feat-highlights-card p {
	margin: 0;
	color: var(--text);
	font-size: 0.95rem;
	line-height: 1.5;
	font-family: "Noto Sans SC", sans-serif;
}

/* ── Sections ──────────────────────────────────────────────────────── */
.feat-section {
	padding: 34px 0 84px;
	border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.feat-section:first-of-type {
	border-top: none;
}

.feat-section-title {
	margin-bottom: 26px;
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 14px;
}

.feat-section-title h2 {
	margin: 0;
	font-size: clamp(1.75rem, 4vw, 2.75rem);
	line-height: 1.15;
	color: #ffffff;
	font-weight: 600;
	letter-spacing: -0.02em;
}

.feat-section-title p {
	margin: 0;
	color: var(--muted);
	max-width: 100%;
	font-family: "Noto Sans SC", sans-serif;
	font-size: 1rem;
}

.feat-feature-block {
	display: grid;
	grid-template-columns: 1fr;
	gap: 26px;
	margin-top: 22px;
}

.feat-feature-card {
	background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.025));
	border: 1px solid rgba(255, 255, 255, 0.08);
	border-radius: 24px;
	padding: 30px;
	box-shadow: var(--shadow);
}

.feat-feature-card h3 {
	margin: 0 0 8px;
	font-size: clamp(1.5rem, 2.5vw, 1.875rem);
	line-height: 1.18;
	color: #ffffff;
	font-weight: 600;
}

.feat-subtitle {
	color: #4cc9f0;
	font-size: 0.95rem;
	font-weight: 600;
	margin-bottom: 20px;
	font-family: "Montserrat", sans-serif;
}

.feat-feature-content {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 24px;
}

.feat-content-box {
	background: rgba(255, 255, 255, 0.025);
	border: 1px solid rgba(255, 255, 255, 0.06);
	border-radius: 18px;
	padding: 22px;
}

.feat-content-text {
	font-size: 0.95rem;
	color: var(--text);
	font-family: "Noto Sans SC", sans-serif;
}

.feat-content-text p {
	margin: 0 0 18px;
}

.feat-content-text p:last-child {
	margin-bottom: 0;
}

.feat-image-placeholder {
	margin-top: 18px;
	min-height: 200px;
	border-radius: 14px;
	border: 1px dashed rgba(45, 199, 207, 0.35);
	background: linear-gradient(180deg, rgba(45, 199, 207, 0.06), rgba(45, 199, 207, 0.02)),
		rgba(17, 25, 37, 0.4);
	display: flex;
	align-items: center;
	justify-content: center;
	text-align: center;
	color: var(--muted);
	font-size: 0.88rem;
	padding: 20px;
	font-family: "Noto Sans SC", sans-serif;
}

.feat-image-placeholder strong {
	display: block;
	color: var(--text);
	font-size: 0.95rem;
	margin-bottom: 8px;
}

.feat-image-placeholder-hint {
	display: block;
	line-height: 1.45;
	opacity: 0.9;
}

.feat-image-holder {
	margin-top: 18px;
}

.feat-image-holder img {
	width: 100%;
	height: auto;
	display: block;
	border-radius: 14px;
	border: 1px solid var(--line);
}

.feat-spec-row {
	margin-top: 18px;
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 14px;
}

.feat-spec {
	padding: 18px;
	background: rgba(255, 255, 255, 0.03);
	border: 1px solid rgba(255, 255, 255, 0.06);
	border-radius: 16px;
}

.feat-spec-k {
	color: var(--muted);
	font-size: 0.82rem;
	margin-bottom: 8px;
	font-family: "Noto Sans SC", sans-serif;
}

.feat-spec-v {
	color: #ffffff;
	font-size: 1.25rem;
	font-weight: 800;
	font-family: "Montserrat", sans-serif;
	line-height: 1.25;
}

.site-header {
	position: sticky;
	top: 0;
	z-index: 10;
	backdrop-filter: blur(12px);
	background: rgba(6, 10, 14, 0.88);
	border-bottom: 1px solid rgba(159, 177, 196, 0.18);
}

.site-footer {
	border-top: 1px solid var(--line);
	padding: 34px 0 40px;
	background: #05090e;
	color: var(--muted);
}

@media (max-width: 1024px) {
	.feat-hero-grid,
	.feat-feature-content {
		grid-template-columns: 1fr;
	}

	.feat-highlights-grid[data-count="3"],
	.feat-highlights-grid[data-count="4"] { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
	.feat-hero {
		padding: 56px 0 40px;
	}

	.feat-hero-stats,
	.feat-spec-row {
		grid-template-columns: 1fr;
	}

	.feat-feature-card {
		padding: 22px 20px;
	}

	.feat-section {
		padding: 36px 0 48px;
	}

	.feat-highlights-grid[data-count="2"],
	.feat-highlights-grid[data-count="3"],
	.feat-highlights-grid[data-count="4"] { grid-template-columns: 1fr; }
}