/* Product Detail Page — 深色主题（与首页共享变量） */
:root {
	--bg: #06090d;
	--bg-soft: #0d131a;
	--card: #111925;
	--text: #edf2f7;
	--muted: #9fb1c4;
	--brand: #2dc7cf;
	--brand-2: #5fdfe5;
	--line: #203144;
}
body {
	margin: 0;
	/* 与 Product.html 一致：正文为 Noto Sans SC；标题单独指定 Montserrat */
	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: 1.6;
}
.container { width: min(1160px, 92vw); margin: 0 auto; }

.product-hero { padding: 60px 0 40px; }
.eyebrow { margin: 0 0 8px; color: var(--brand-2); font-family: "Montserrat", sans-serif; letter-spacing: 0.12em; text-transform: uppercase; font-size: 0.78rem; }
h1, h2, h3, h4 { margin: 0; font-family: "Montserrat", sans-serif; line-height: 1.2; }
h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 14px; color: #ffffff; font-weight: 700; }
.lead { color: var(--muted); max-width: 700px; font-family: "Noto Sans SC", sans-serif; }
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: stretch; margin-top: 20px; }
.product-image {
	border-radius: 14px;
	overflow: hidden;
	background: #111925;
	border: 1px solid var(--line);
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 20px;
	max-height: 450px;
}
.product-image img {
	max-width: 100%;
	max-height: 100%;
	width: auto;
	height: auto;
	object-fit: contain;
	display: block;
}

.section { padding: 50px 0; border-top: 1px solid var(--line); }
.section-title { margin-bottom: 24px; font-size: 1.6rem; color: var(--brand-2); font-weight: 600; }
.param-grid { display: grid; grid-template-columns: 1fr; gap: 16px; height: 100%; }
.param-card { background: linear-gradient(165deg, rgba(18, 28, 42, 0.86), rgba(11, 17, 26, 0.86)); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.param-card h4 { font-size: 1rem; margin-bottom: 8px; color: var(--text); font-weight: 600; }
.param-card p { margin: 0; color: var(--muted); font-family: "Noto Sans SC", sans-serif; }

.param-table { width: 100%; border-collapse: collapse; margin-top: 12px; }
.param-table th, .param-table td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); font-family: "Noto Sans SC", sans-serif; }
.param-table th { color: var(--brand-2); font-weight: 600; }
.param-table td { color: var(--muted); }

/* Module Function Section */
.section-function .function-content {
	background: linear-gradient(165deg, rgba(18, 28, 42, 0.86), rgba(11, 17, 26, 0.86));
	border: 1px solid var(--line);
	border-radius: 12px;
	padding: 24px 28px;
}
.section-function .function-content p {
	margin: 0;
	color: var(--muted);
	font-family: "Noto Sans SC", sans-serif;
	line-height: 1.8;
}

/* Key Features Section */
.feature-grid {
	display: grid;
	gap: 16px;
}
.feature-grid[data-count="1"] { grid-template-columns: 1fr; }
.feature-grid[data-count="2"] { grid-template-columns: repeat(2, 1fr); }
.feature-grid[data-count="3"] { grid-template-columns: repeat(3, 1fr); }
.feature-grid[data-count="4"] { grid-template-columns: repeat(4, 1fr); }

.section-features .feature-card {
	background: var(--card);
	border: 1px solid var(--line);
	border-radius: 12px;
	padding: 24px;
	display: flex;
	flex-direction: column;
	gap: 10px;
}
.section-features .feature-card h4 {
	font-size: 1.05rem;
	color: var(--text);
	margin: 0;
}
.section-features .feature-card p {
	margin: 0;
	color: var(--muted);
	font-size: 0.95rem;
	line-height: 1.5;
}

/* Support Documents Section */
.section-support-docs .docs-list {
	display: flex;
	flex-direction: column;
	gap: 12px;
}
.section-support-docs .doc-item {
	background: linear-gradient(165deg, rgba(18, 28, 42, 0.86), rgba(11, 17, 26, 0.86));
	border: 1px solid var(--line);
	border-radius: 10px;
	padding: 16px 20px;
	display: flex;
	justify-content: space-between;
	align-items: center;
}
.section-support-docs .doc-info h4 {
	font-size: 0.95rem;
	color: var(--text);
	margin-bottom: 4px;
	font-weight: 500;
}
.section-support-docs .doc-info span {
	font-size: 0.85rem;
	color: var(--muted);
}
.section-support-docs .doc-download {
	color: var(--brand);
	text-decoration: none;
	font-size: 0.9rem;
	padding: 8px 16px;
	border: 1px solid var(--brand);
	border-radius: 6px;
	transition: all 0.2s ease;
}
.section-support-docs .doc-download:hover {
	background: var(--brand);
	color: var(--bg);
}
.section-support-docs .more-docs-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	margin-top: 24px;
	padding: 12px 28px;
	background: transparent;
	border: 1px solid var(--brand);
	border-radius: 6px;
	color: var(--brand);
	font-family: "Montserrat", sans-serif;
	font-size: 0.9rem;
	font-weight: 500;
	text-decoration: none;
	transition: all 0.2s ease;
}
.section-support-docs .more-docs-btn:hover {
	background: var(--brand);
	color: var(--bg);
}
.section-support-docs .btn-wrap {
	text-align: center;
}

@media (max-width: 960px) {
	.product-grid { grid-template-columns: 1fr; }
	.feature-grid[data-count="3"],
	.feature-grid[data-count="4"] { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
	.section-support-docs .doc-item {
		flex-direction: column;
		align-items: flex-start;
		gap: 12px;
	}
}
@media (max-width: 640px) {
	.product-hero { padding: 40px 0 20px; }
	.section { padding: 30px 0; }
	.feature-grid[data-count="2"],
	.feature-grid[data-count="3"],
	.feature-grid[data-count="4"] { grid-template-columns: 1fr; }
}