/* roulang page: index */
:root {
			--primary: #2F6FCF;
			--primary-hover: #1E56B0;
			--primary-light: #EBF2FC;
			--accent: #E8982E;
			--accent-hover: #C97F1F;
			--accent-light: #FDF3E7;
			--bg: #F5F8FC;
			--surface: #FFFFFF;
			--border: #E1E8F2;
			--heading: #1E2A38;
			--text: #334155;
			--muted: #6B7A90;
			--dark: #152A40;
			--dark-text: #AEBFCF;
			--radius-lg: 16px;
			--radius-md: 10px;
			--radius-sm: 8px;
			--shadow-sm: 0 6px 20px rgba(21, 42, 64, 0.05);
			--shadow-lg: 0 12px 32px rgba(21, 42, 64, 0.12);
			--container: 1200px;
		}

		* {
			box-sizing: border-box;
		}
		html {
			scroll-behavior: smooth;
		}
		body {
			margin: 0;
			font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
			background: var(--bg);
			color: var(--text);
			line-height: 1.75;
			font-size: 16px;
			-webkit-font-smoothing: antialiased;
		}
		a {
			text-decoration: none;
			color: inherit;
		}
		img {
			max-width: 100%;
			display: block;
		}
		button,
		input {
			font: inherit;
		}
		button {
			cursor: pointer;
		}
		a:focus-visible,
		button:focus-visible,
		input:focus-visible {
			outline: 3px solid rgba(47, 111, 207, 0.35);
			outline-offset: 2px;
		}
		.btn-accent:focus-visible {
			outline-color: rgba(232, 152, 46, 0.45);
		}

		.container {
			max-width: var(--container);
			margin: 0 auto;
			padding: 0 32px;
		}
		.container-narrow {
			max-width: 840px;
		}

		/* ---------- Header ---------- */
		.site-header {
			position: sticky;
			top: 0;
			z-index: 100;
			height: 80px;
			display: flex;
			align-items: center;
			background: rgba(245, 248, 252, 0.86);
			backdrop-filter: blur(8px);
			border-bottom: 1px solid transparent;
			transition: background 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
		}
		.site-header.scrolled {
			background: #fff;
			border-color: var(--border);
			box-shadow: 0 4px 16px rgba(21, 42, 64, 0.06);
		}
		.header-inner {
			display: flex;
			align-items: center;
			justify-content: space-between;
			width: 100%;
			gap: 20px;
		}
		.brand {
			display: flex;
			align-items: center;
			gap: 10px;
			font-weight: 800;
			color: var(--heading);
			flex-shrink: 0;
		}
		.brand-mark {
			width: 36px;
			height: 36px;
			border-radius: 10px;
			background: var(--primary-light);
			display: flex;
			align-items: center;
			justify-content: center;
			color: var(--primary);
		}
		.brand-name {
			font-size: 22px;
			letter-spacing: 0.5px;
		}
		.brand-sub {
			font-size: 13px;
			font-weight: 600;
			color: var(--accent);
			background: var(--accent-light);
			border-radius: 999px;
			padding: 2px 8px;
			margin-top: 2px;
		}
		.main-nav {
			display: flex;
			gap: 30px;
		}
		.nav-link {
			font-size: 15px;
			font-weight: 500;
			color: var(--text);
			padding: 8px 2px;
			position: relative;
			transition: color 0.2s ease;
		}
		.nav-link:hover {
			color: var(--primary);
		}
		.nav-link.active {
			color: var(--primary);
			font-weight: 600;
		}
		.nav-link.active::after {
			content: '';
			position: absolute;
			left: 0;
			right: 0;
			bottom: -2px;
			height: 2px;
			background: var(--accent);
			border-radius: 2px;
		}
		.nav-actions {
			display: flex;
			align-items: center;
			gap: 12px;
			flex-shrink: 0;
		}
		.menu-toggle {
			display: none;
			background: none;
			border: 0;
			padding: 8px;
			border-radius: 8px;
			color: var(--heading);
		}

		.mobile-menu {
			position: fixed;
			top: 64px;
			left: 0;
			right: 0;
			background: #fff;
			border-bottom: 1px solid var(--border);
			box-shadow: var(--shadow-lg);
			padding: 16px 20px 24px;
			display: none;
			z-index: 99;
		}
		.mobile-menu.open {
			display: block;
		}
		.mobile-menu .nav-link {
			display: block;
			padding: 12px 0;
			border-bottom: 1px solid #F1F5FB;
		}
		.mobile-menu .nav-actions {
			margin-top: 16px;
			display: flex;
			gap: 12px;
		}

		/* ---------- Buttons ---------- */
		.btn {
			display: inline-flex;
			align-items: center;
			justify-content: center;
			gap: 8px;
			font-size: 15px;
			font-weight: 600;
			border-radius: 8px;
			padding: 12px 28px;
			transition: all 0.2s ease;
			border: 0;
			line-height: 1.4;
		}
		.btn-accent {
			background: var(--accent);
			color: #fff;
			box-shadow: 0 6px 16px rgba(232, 152, 46, 0.28);
		}
		.btn-accent:hover {
			background: var(--accent-hover);
			transform: translateY(-2px);
			box-shadow: 0 10px 22px rgba(232, 152, 46, 0.35);
		}
		.btn-primary {
			background: var(--primary);
			color: #fff;
		}
		.btn-primary:hover {
			background: var(--primary-hover);
			transform: translateY(-2px);
		}
		.btn-ghost {
			background: transparent;
			color: var(--text);
			padding: 8px 16px;
			font-weight: 500;
		}
		.btn-ghost:hover {
			color: var(--primary);
			background: var(--primary-light);
		}
		.btn-outline {
			background: #fff;
			color: var(--primary);
			border: 1px solid var(--primary);
			padding: 11px 26px;
		}
		.btn-outline:hover {
			background: var(--primary-light);
			transform: translateY(-2px);
		}
		.btn-lg {
			font-size: 16px;
			padding: 14px 32px;
		}

		/* ---------- Sections ---------- */
		.section {
			padding: 100px 0;
		}
		.section-alt {
			background: #EFF4FB;
		}
		.section-head {
			max-width: 680px;
			margin-bottom: 48px;
		}
		.section-tag {
			display: inline-block;
			font-size: 13px;
			font-weight: 600;
			color: var(--primary);
			background: var(--primary-light);
			border-radius: 999px;
			padding: 5px 14px;
			margin-bottom: 14px;
		}
		.section-head h2 {
			font-size: 30px;
			font-weight: 700;
			color: var(--heading);
			margin: 0 0 12px;
			line-height: 1.35;
		}
		.section-head p {
			font-size: 16px;
			color: var(--muted);
			margin: 0;
		}

		/* ---------- Hero ---------- */
		.hero {
			position: relative;
			background: radial-gradient(circle at 20% 20%, #EBF2FC 0%, #F5F8FC 58%);
			padding: 100px 0 88px;
			overflow: hidden;
		}
		.hero-bg {
			position: absolute;
			top: 0;
			right: 0;
			width: 52%;
			height: 100%;
			background-size: cover;
			background-position: center;
			opacity: 0.32;
			pointer-events: none;
			z-index: 0;
		}
		.hero-inner {
			position: relative;
			z-index: 1;
			display: flex;
			flex-direction: column;
			gap: 48px;
		}
		.hero-content {
			max-width: 760px;
		}
		.hero-eyebrow {
			display: inline-flex;
			align-items: center;
			gap: 6px;
			background: var(--accent-light);
			color: #B4691A;
			font-size: 13px;
			font-weight: 600;
			padding: 6px 14px;
			border-radius: 999px;
			margin-bottom: 20px;
		}
		.hero h1 {
			font-size: 52px;
			line-height: 1.22;
			font-weight: 800;
			color: var(--heading);
			margin: 0 0 18px;
			letter-spacing: -0.5px;
		}
		.hero-sub {
			font-size: 18px;
			color: var(--text);
			line-height: 1.7;
			margin: 0 0 28px;
		}
		.hero-actions {
			display: flex;
			gap: 16px;
			flex-wrap: wrap;
		}
		.hero-stats {
			display: flex;
			gap: 48px;
			flex-wrap: wrap;
			padding-top: 8px;
		}
		.stat-item {
			display: flex;
			align-items: center;
			gap: 10px;
		}
		.stat-icon {
			width: 38px;
			height: 38px;
			border-radius: 10px;
			background: #fff;
			border: 1px solid var(--border);
			display: flex;
			align-items: center;
			justify-content: center;
			color: var(--primary);
			box-shadow: var(--shadow-sm);
		}
		.stat-num {
			font-size: 24px;
			font-weight: 800;
			color: var(--heading);
			font-family: 'DIN Alternate', 'Helvetica Neue', sans-serif;
			letter-spacing: -0.5px;
			line-height: 1.2;
		}
		.stat-label {
			font-size: 13px;
			color: var(--muted);
		}

		/* ---------- Badges ---------- */
		.badge {
			display: inline-flex;
			align-items: center;
			gap: 4px;
			font-size: 12px;
			font-weight: 600;
			border-radius: 999px;
			padding: 4px 10px;
		}
		.badge-blue {
			background: var(--primary-light);
			color: var(--primary);
		}
		.badge-accent {
			background: var(--accent);
			color: #fff;
		}
		.badge-gray {
			background: #EDF1F7;
			color: var(--muted);
		}
		.badge-hot {
			background: var(--accent);
			color: #fff;
			font-size: 12px;
			font-weight: 700;
			padding: 3px 10px;
			border-radius: 999px;
			margin-left: 6px;
			vertical-align: 2px;
		}

		/* ---------- Compare Table ---------- */
		.table-hint {
			display: none;
			font-size: 12px;
			color: var(--muted);
			margin-bottom: 10px;
		}
		.table-wrap {
			background: #fff;
			border: 1px solid var(--border);
			border-radius: var(--radius-lg);
			box-shadow: var(--shadow-sm);
			overflow-x: auto;
			padding: 4px;
		}
		.compare-table {
			width: 100%;
			border-collapse: separate;
			border-spacing: 0;
			min-width: 860px;
		}
		.compare-table th,
		.compare-table td {
			padding: 16px 20px;
			text-align: center;
			font-size: 14px;
			border-bottom: 1px solid #F0F4FA;
		}
		.compare-table thead th {
			background: var(--primary-light);
			font-size: 14px;
			font-weight: 700;
			color: var(--heading);
		}
		.compare-table thead th:first-child {
			border-radius: 12px 0 0 0;
		}
		.compare-table thead th:last-child {
			border-radius: 0 12px 0 0;
		}
		.compare-table tbody tr:last-child td {
			border-bottom: 0;
		}
		.compare-table th:first-child,
		.compare-table td:first-child {
			text-align: left;
			font-weight: 600;
			color: var(--heading);
			width: 220px;
			min-width: 220px;
		}
		.compare-table .highlight-col {
			background: var(--primary-light);
			position: relative;
		}
		.compare-table .highlight-col::before {
			content: '';
			position: absolute;
			top: -1px;
			left: -1px;
			right: -1px;
			height: 2px;
			background: var(--accent);
		}
		.compare-table .icon-yes {
			color: var(--primary);
			font-weight: 800;
			font-size: 16px;
		}
		.compare-table .icon-no {
			color: #C0CCDA;
			font-size: 16px;
		}
		.compare-table .cell-note {
			font-size: 13px;
			color: var(--muted);
		}

		/* ---------- Tier Cards ---------- */
		.tier-list {
			display: flex;
			align-items: flex-end;
			gap: 20px;
		}
		.tier-card {
			flex: 1;
			background: #fff;
			border: 1px solid var(--border);
			border-radius: var(--radius-lg);
			box-shadow: var(--shadow-sm);
			padding: 28px;
			display: flex;
			flex-direction: column;
			min-height: 360px;
			transition: box-shadow 0.2s ease, transform 0.2s ease;
			position: relative;
		}
		.tier-card:hover {
			box-shadow: var(--shadow-lg);
			transform: translateY(-3px);
		}
		.tier-card.tier-2 {
			min-height: 388px;
		}
		.tier-card.tier-3 {
			min-height: 416px;
		}
		.tier-card.tier-4 {
			min-height: 444px;
			border-color: transparent;
			box-shadow: 0 10px 30px rgba(232, 152, 46, 0.12);
			border-top: 3px solid var(--accent);
		}
		.tier-level {
			display: flex;
			align-items: center;
			justify-content: space-between;
			margin-bottom: 14px;
		}
		.tier-level-name {
			font-size: 18px;
			font-weight: 700;
			color: var(--heading);
		}
		.tier-current {
			background: var(--accent-light);
			color: #B4691A;
			font-size: 12px;
			font-weight: 600;
			padding: 3px 10px;
			border-radius: 999px;
		}
		.tier-price {
			font-size: 26px;
			font-weight: 800;
			color: var(--primary);
			font-family: 'DIN Alternate', 'Helvetica Neue', sans-serif;
			margin-bottom: 6px;
			line-height: 1.2;
		}
		.tier-price small {
			font-size: 14px;
			color: var(--muted);
			font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
			font-weight: 500;
		}
		.tier-sub {
			font-size: 13px;
			color: var(--muted);
			margin-bottom: 18px;
		}
		.tier-features {
			list-style: none;
			margin: 0 0 24px;
			padding: 0;
			flex: 1;
		}
		.tier-features li {
			display: flex;
			align-items: flex-start;
			gap: 8px;
			font-size: 14px;
			color: var(--text);
			padding: 6px 0;
		}
		.tier-features li::before {
			content: '✓';
			color: var(--primary);
			font-weight: 700;
			flex-shrink: 0;
		}
		.tier-link {
			align-self: flex-start;
			font-size: 14px;
			font-weight: 600;
			color: var(--primary);
		}
		.tier-link:hover {
			text-decoration: underline;
		}

		/* ---------- Preview Grid ---------- */
		.preview-grid {
			display: grid;
			grid-template-columns: 1.4fr 1fr;
			gap: 20px;
		}
		.preview-main {
			position: relative;
			border-radius: var(--radius-lg);
			overflow: hidden;
			min-height: 340px;
			display: block;
			box-shadow: var(--shadow-sm);
		}
		.preview-main img {
			width: 100%;
			height: 100%;
			object-fit: cover;
			min-height: 340px;
			transition: transform 0.4s ease;
		}
		.preview-main:hover img {
			transform: scale(1.03);
		}
		.preview-side {
			display: grid;
			grid-template-rows: 1fr 1fr;
			gap: 20px;
		}
		.preview-card {
			position: relative;
			border-radius: var(--radius-lg);
			overflow: hidden;
			display: block;
			box-shadow: var(--shadow-sm);
		}
		.preview-card img {
			width: 100%;
			height: 160px;
			object-fit: cover;
			transition: transform 0.4s ease;
		}
		.preview-card:hover img {
			transform: scale(1.03);
		}
		.cover-mask {
			position: absolute;
			inset: 0;
			background: rgba(255, 255, 255, 0.15);
			transition: background 0.2s ease;
			z-index: 1;
		}
		.card-cover:hover .cover-mask {
			background: transparent;
		}
		.cover-content {
			position: absolute;
			left: 0;
			right: 0;
			bottom: 0;
			padding: 24px;
			color: #fff;
			background: linear-gradient(180deg, transparent, rgba(8, 18, 32, 0.85));
			z-index: 2;
		}
		.cover-content h3 {
			font-size: 18px;
			font-weight: 700;
			margin: 0 0 4px;
			color: #fff;
		}
		.cover-content p {
			font-size: 13px;
			margin: 0;
			opacity: 0.85;
			color: #fff;
		}
		.lock-icon {
			position: absolute;
			top: 50%;
			left: 50%;
			transform: translate(-50%, -50%);
			background: rgba(255, 255, 255, 0.92);
			width: 44px;
			height: 44px;
			border-radius: 50%;
			display: flex;
			align-items: center;
			justify-content: center;
			color: var(--primary);
			box-shadow: var(--shadow-sm);
			z-index: 3;
			transition: opacity 0.2s ease;
			opacity: 0.75;
		}
		.card-cover:hover .lock-icon {
			opacity: 0;
		}
		.badge-member {
			position: absolute;
			top: 16px;
			right: 16px;
			background: var(--accent);
			color: #fff;
			font-size: 12px;
			font-weight: 700;
			padding: 4px 12px;
			border-radius: 999px;
			z-index: 4;
			opacity: 0;
			transform: translateY(-4px);
			transition: all 0.2s ease;
		}
		.card-cover:hover .badge-member {
			opacity: 1;
			transform: none;
		}
		.section-more {
			text-align: right;
			margin-top: 24px;
			font-size: 14px;
			font-weight: 600;
		}
		.section-more a {
			color: var(--primary);
		}
		.section-more a:hover {
			text-decoration: underline;
		}

		/* ---------- News List ---------- */
		.news-list {
			display: flex;
			flex-direction: column;
			gap: 12px;
		}
		.news-row {
			display: flex;
			gap: 20px;
			align-items: center;
			background: #fff;
			border: 1px solid var(--border);
			border-radius: var(--radius-lg);
			padding: 16px;
			transition: background 0.2s ease, box-shadow 0.2s ease;
			box-shadow: var(--shadow-sm);
		}
		.news-row:hover {
			background: #F8FAFE;
			box-shadow: var(--shadow-lg);
		}
		.news-thumb {
			width: 96px;
			height: 72px;
			flex-shrink: 0;
			border-radius: 10px;
			overflow: hidden;
			background: var(--primary-light);
			display: flex;
			align-items: center;
			justify-content: center;
			font-size: 22px;
			font-weight: 800;
			color: var(--primary);
		}
		.news-thumb img {
			width: 100%;
			height: 100%;
			object-fit: cover;
		}
		.thumb-letter {
			font-size: 24px;
			font-weight: 800;
			color: var(--primary);
		}
		.news-info {
			min-width: 0;
			flex: 1;
		}
		.news-info h3 {
			font-size: 18px;
			font-weight: 600;
			color: var(--heading);
			margin: 0 0 4px;
			line-height: 1.4;
			transition: color 0.2s ease;
		}
		.news-row:hover .news-info h3 {
			color: var(--primary);
			text-decoration: underline;
		}
		.news-info p {
			font-size: 15px;
			color: var(--muted);
			margin: 0 0 8px;
			line-height: 1.6;
			display: -webkit-box;
			-webkit-line-clamp: 2;
			-webkit-box-orient: vertical;
			overflow: hidden;
		}
		.news-meta {
			display: flex;
			align-items: center;
			flex-wrap: wrap;
			gap: 8px 14px;
			font-size: 13px;
			color: var(--muted);
		}

		/* ---------- Empty State ---------- */
		.empty-state {
			border: 1px dashed #C4D0DE;
			border-radius: var(--radius-lg);
			padding: 60px 20px;
			text-align: center;
			color: var(--muted);
			background: #fff;
		}
		.empty-state svg {
			width: 40px;
			height: 40px;
			color: #C0CCDA;
			margin-bottom: 12px;
		}
		.empty-state p {
			font-size: 14px;
			margin: 0;
		}

		/* ---------- FAQ ---------- */
		.faq-list {
			border-top: 1px solid var(--border);
		}
		.faq-item {
			border-bottom: 1px solid var(--border);
		}
		.faq-q {
			display: flex;
			align-items: center;
			justify-content: space-between;
			gap: 16px;
			width: 100%;
			background: none;
			border: 0;
			padding: 22px 4px;
			font-size: 16px;
			font-weight: 500;
			color: var(--heading);
			text-align: left;
			transition: color 0.2s ease;
		}
		.faq-q:hover {
			color: var(--primary);
		}
		.faq-q.open {
			color: var(--primary);
		}
		.faq-icon {
			width: 24px;
			height: 24px;
			border-radius: 6px;
			border: 1px solid var(--border);
			display: flex;
			align-items: center;
			justify-content: center;
			font-size: 18px;
			font-weight: 400;
			color: var(--primary);
			transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
			flex-shrink: 0;
			background: #fff;
		}
		.faq-q.open .faq-icon {
			transform: rotate(45deg);
			background: var(--primary-light);
			border-color: var(--primary);
		}
		.faq-a {
			max-height: 0;
			overflow: hidden;
			transition: max-height 0.3s ease;
			padding: 0 4px;
		}
		.faq-a p {
			padding-bottom: 22px;
			margin: 0;
			font-size: 15px;
			line-height: 1.7;
			color: var(--muted);
			max-width: 92%;
		}

		/* ---------- CTA ---------- */
		.cta-card {
			background: var(--dark);
			border-radius: var(--radius-lg);
			padding: 52px 48px;
			display: flex;
			align-items: center;
			justify-content: space-between;
			gap: 40px;
			position: relative;
			overflow: hidden;
			color: #fff;
		}
		.cta-text h2 {
			font-size: 28px;
			font-weight: 700;
			margin: 0 0 10px;
			color: #fff;
			line-height: 1.4;
		}
		.cta-price {
			font-size: 22px;
			font-weight: 800;
			color: var(--accent);
			margin: 0 0 8px;
		}
		.cta-note {
			font-size: 14px;
			color: var(--dark-text);
			margin: 0;
		}
		.cta-form {
			display: flex;
			gap: 10px;
			flex-shrink: 0;
			max-width: 440px;
			width: 100%;
		}
		.cta-form input {
			flex: 1;
			min-width: 0;
			border: 1px solid rgba(255, 255, 255, 0.18);
			background: rgba(255, 255, 255, 0.06);
			border-radius: 10px;
			padding: 13px 16px;
			color: #fff;
			outline: none;
			transition: border-color 0.2s ease, box-shadow 0.2s ease;
		}
		.cta-form input::placeholder {
			color: #8FA3B8;
		}
		.cta-form input:focus {
			border-color: var(--accent);
			box-shadow: 0 0 0 3px rgba(232, 152, 46, 0.22);
		}
		.trophy-decor {
			position: absolute;
			right: 24px;
			bottom: 16px;
			opacity: 0.18;
			pointer-events: none;
			color: #fff;
		}

		/* ---------- Footer ---------- */
		.site-footer {
			background: var(--dark);
			position: relative;
		}
		.site-footer::before {
			content: '';
			display: block;
			height: 2px;
			background: var(--accent);
		}
		.footer-grid {
			display: grid;
			grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
			gap: 40px;
			padding: 64px 0 48px;
		}
		.footer-brand .brand-name {
			color: #fff;
		}
		.footer-brand p {
			font-size: 14px;
			color: var(--dark-text);
			margin: 16px 0 20px;
			line-height: 1.7;
		}
		.footer-social {
			display: flex;
			gap: 10px;
		}
		.footer-social a {
			width: 34px;
			height: 34px;
			border-radius: 8px;
			border: 1px solid rgba(255, 255, 255, 0.15);
			display: flex;
			align-items: center;
			justify-content: center;
			color: var(--dark-text);
			transition: all 0.2s ease;
		}
		.footer-social a:hover {
			background: var(--primary-light);
			color: var(--primary);
			border-color: var(--primary-light);
		}
		.footer-col h3 {
			color: #fff;
			font-size: 16px;
			font-weight: 600;
			margin: 0 0 18px;
		}
		.footer-col a {
			display: block;
			color: var(--dark-text);
			font-size: 14px;
			padding: 6px 0;
			transition: color 0.2s ease;
		}
		.footer-col a:hover {
			color: #fff;
		}
		.footer-contact {
			font-size: 14px;
			color: var(--dark-text);
			line-height: 2;
		}
		.footer-contact a {
			color: var(--dark-text);
		}
		.footer-contact a:hover {
			color: #fff;
		}
		.footer-bottom {
			border-top: 1px solid rgba(255, 255, 255, 0.08);
			padding: 20px 0;
			font-size: 13px;
			color: #7D93AB;
		}
		.footer-bottom-inner {
			display: flex;
			justify-content: space-between;
			gap: 16px;
			align-items: center;
			flex-wrap: wrap;
		}

		/* ---------- Responsive ---------- */
		@media (max-width: 1024px) {
			.main-nav {
				gap: 16px;
			}
			.nav-link {
				font-size: 14px;
			}
			.brand-name {
				font-size: 20px;
			}
			.hero h1 {
				font-size: 42px;
			}
			.tier-list {
				gap: 14px;
			}
			.tier-card {
				padding: 22px;
			}
		}
		@media (max-width: 768px) {
			.site-header {
				height: 64px;
			}
			.main-nav,
			.desktop-actions {
				display: none;
			}
			.menu-toggle {
				display: inline-flex;
			}
			.hero {
				padding: 60px 0 56px;
			}
			.hero h1 {
				font-size: 32px;
				line-height: 1.3;
			}
			.hero-sub {
				font-size: 16px;
			}
			.hero-stats {
				gap: 28px;
			}
			.section {
				padding: 64px 0;
			}
			.section-head {
				margin-bottom: 32px;
			}
			.table-hint {
				display: block;
			}
			.compare-table {
				min-width: 760px;
			}
			.tier-list {
				flex-direction: column;
				gap: 16px;
				align-items: stretch;
			}
			.tier-card,
			.tier-card.tier-2,
			.tier-card.tier-3,
			.tier-card.tier-4 {
				min-height: auto;
			}
			.preview-grid {
				grid-template-columns: 1fr;
			}
			.preview-side {
				grid-template-rows: repeat(2, auto);
			}
			.cta-card {
				flex-direction: column;
				padding: 32px 24px;
				align-items: stretch;
			}
			.cta-form {
				flex-direction: column;
				max-width: none;
			}
			.news-row {
				flex-direction: column;
				align-items: flex-start;
			}
			.news-thumb {
				width: 100%;
				height: 160px;
			}
			.footer-grid {
				grid-template-columns: 1fr 1fr;
			}
		}
		@media (max-width: 520px) {
			.container {
				padding: 0 16px;
			}
			.hero h1 {
				font-size: 28px;
			}
			.hero-stats {
				flex-direction: column;
				gap: 16px;
			}
			.btn-lg {
				width: 100%;
			}
			.hero-actions {
				flex-direction: column;
				gap: 12px;
			}
			.footer-grid {
				grid-template-columns: 1fr;
			}
			.cta-text h2 {
				font-size: 24px;
			}
		}

/* roulang page: article */
:root {
    --brand: #2F6FCF;
    --brand-dark: #1E56B0;
    --brand-light: #EBF2FC;
    --accent: #E8982E;
    --accent-dark: #C97F1F;
    --accent-light: #FDF3E7;
    --bg-canvas: #F5F8FC;
    --bg-surface: #FFFFFF;
    --border-line: #E1E8F2;
    --text-title: #1E2A38;
    --text-body: #334155;
    --text-muted: #6B7A90;
    --dark-block: #152A40;
    --radius-card: 16px;
    --radius-small: 10px;
    --radius-btn: 8px;
    --shadow-card: 0 6px 20px rgba(21, 42, 64, 0.05);
    --shadow-hover: 0 12px 32px rgba(21, 42, 64, 0.12);
    --transition: 0.2s ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background: var(--bg-canvas);
    color: var(--text-body);
    font-size: 15px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition);
}

button,
input {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ===== 导航 ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: 80px;
    background: rgba(245, 248, 252, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.site-header.scrolled {
    background: #fff;
    border-bottom-color: var(--border-line);
    box-shadow: 0 2px 12px rgba(21, 42, 64, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.brand {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--brand);
    color: #fff;
}

.brand-name {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-title);
    letter-spacing: -0.5px;
}

.brand-sub {
    font-size: 13px;
    font-weight: 400;
    color: var(--text-muted);
    background: var(--brand-light);
    border-radius: 999px;
    padding: 2px 10px;
    margin-left: -4px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    position: relative;
    display: inline-block;
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-body);
    border-radius: 8px;
    transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
    color: var(--brand);
    background: var(--brand-light);
}

.nav-link.active {
    color: var(--brand);
    font-weight: 600;
}

.nav-link.active::after {
    content: "";
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 2px;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 24px;
    border-radius: var(--radius-btn);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
}

.btn-ghost {
    background: transparent;
    color: var(--text-body);
    border: 1px solid var(--border-line);
}

.btn-ghost:hover {
    background: var(--brand-light);
    color: var(--brand);
    border-color: var(--brand);
}

.btn-primary {
    background: var(--brand);
    color: #fff;
    box-shadow: 0 4px 12px rgba(47, 111, 207, 0.25);
}

.btn-primary:hover {
    background: var(--brand-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(47, 111, 207, 0.3);
}

.btn-accent {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 14px rgba(232, 152, 46, 0.3);
}

.btn-accent:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(232, 152, 46, 0.35);
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    align-items: center;
    justify-content: center;
    color: var(--text-title);
    cursor: pointer;
    border: 1px solid var(--border-line);
    background: #fff;
    transition: all var(--transition);
}

.menu-toggle:hover {
    border-color: var(--brand);
    color: var(--brand);
}

/* ===== 文章 Banner ===== */
.article-banner {
    position: relative;
    padding: 56px 0 48px;
    background: var(--brand-light);
    overflow: hidden;
    border-bottom: 1px solid var(--border-line);
}

.article-banner-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.16;
}

.article-banner-mask {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(235, 242, 252, 0.92) 0%, rgba(235, 242, 252, 0.55) 100%);
}

.article-banner-content {
    position: relative;
    z-index: 2;
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--text-muted);
    transition: color var(--transition);
}

.breadcrumb a:hover {
    color: var(--brand);
}

.breadcrumb .sep {
    color: #B8C4D4;
    font-size: 12px;
}

.breadcrumb .current {
    color: var(--text-title);
    font-weight: 500;
    max-width: 480px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== 文章主体 ===== */
.article-main {
    padding: 48px 0 20px;
}

.article-container {
    max-width: 840px;
    margin: 0 auto;
    padding: 0 32px;
}

.article-card {
    background: var(--bg-surface);
    border-radius: var(--radius-card);
    border: 1px solid var(--border-line);
    border-top: 3px solid var(--brand);
    box-shadow: var(--shadow-card);
    padding: 48px 56px;
    margin-bottom: 40px;
}

.article-title {
    font-size: 34px;
    font-weight: 700;
    line-height: 1.35;
    color: var(--text-title);
    margin-bottom: 20px;
    letter-spacing: -0.3px;
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding-bottom: 24px;
    margin-bottom: 32px;
    border-bottom: 1px solid var(--border-line);
    font-size: 14px;
    color: var(--text-muted);
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.meta-item svg {
    width: 14px;
    height: 14px;
    opacity: 0.7;
}

.meta-dot {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: #C0CCDA;
    display: inline-block;
}

/* 正文排版 */
.article-body {
    font-size: 16px;
    line-height: 1.85;
    color: var(--text-body);
}

.article-body p {
    margin-bottom: 1.5em;
}

.article-body h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-title);
    margin: 2em 0 1em;
    padding-left: 14px;
    border-left: 3px solid var(--brand);
    line-height: 1.4;
}

.article-body h3 {
    font-size: 19px;
    font-weight: 600;
    color: var(--text-title);
    margin: 1.8em 0 0.8em;
    line-height: 1.4;
}

.article-body h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-title);
    margin: 1.4em 0 0.6em;
}

.article-body img {
    border-radius: 12px;
    border: 1px solid var(--border-line);
    margin: 1.6em 0;
}

.article-body blockquote {
    border-left: 4px solid var(--brand);
    background: var(--brand-light);
    padding: 16px 24px;
    border-radius: 0 12px 12px 0;
    color: var(--text-body);
    font-style: normal;
    margin: 1.6em 0;
}

.article-body blockquote p:last-child {
    margin-bottom: 0;
}

.article-body ul,
.article-body ol {
    padding-left: 1.6em;
    margin: 1em 0 1.5em;
}

.article-body li {
    margin-bottom: 0.5em;
}

.article-body a {
    color: var(--brand);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-body a:hover {
    color: var(--brand-dark);
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.6em 0;
    font-size: 15px;
}

.article-body th,
.article-body td {
    border: 1px solid var(--border-line);
    padding: 10px 14px;
    text-align: left;
}

.article-body th {
    background: var(--brand-light);
    font-weight: 600;
    color: var(--text-title);
}

/* 未找到 */
.not-found-card {
    background: var(--bg-surface);
    border-radius: var(--radius-card);
    border: 1px dashed #C0CCDA;
    box-shadow: var(--shadow-card);
    padding: 72px 40px;
    text-align: center;
}

.not-found-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.not-found-card h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 12px;
}

.not-found-card p {
    font-size: 15px;
    color: var(--text-muted);
    margin-bottom: 28px;
}

/* ===== 相关推荐 ===== */
.related-section {
    padding: 30px 0 60px;
    background: var(--bg-canvas);
}

.related-wrap {
    max-width: 840px;
    margin: 0 auto;
    padding: 0 32px;
}

.related-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.related-head h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-title);
}

.related-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.related-item {
    display: flex;
    align-items: center;
    gap: 18px;
    background: var(--bg-surface);
    border: 1px solid var(--border-line);
    border-radius: 14px;
    padding: 14px;
    box-shadow: 0 2px 8px rgba(21, 42, 64, 0.03);
    transition: all var(--transition);
}

.related-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
    border-color: #CDD9EA;
}

.related-thumb {
    width: 120px;
    height: 76px;
    border-radius: 10px;
    object-fit: cover;
    flex-shrink: 0;
    background: var(--brand-light);
}

.related-info {
    flex: 1;
    min-width: 0;
}

.related-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-title);
    line-height: 1.45;
    margin-bottom: 6px;
    transition: color var(--transition);
}

.related-item:hover .related-info h3 {
    color: var(--brand);
}

.related-date {
    font-size: 13px;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 28px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition);
}

.back-link:hover {
    color: var(--brand);
}

.back-link svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition);
}

.back-link:hover svg {
    transform: translateX(-3px);
}

/* ===== CTA 条 ===== */
.cta-strip {
    padding: 20px 0 80px;
    background: var(--bg-canvas);
}

.cta-card {
    background: var(--dark-block);
    border-radius: var(--radius-card);
    padding: 40px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
}

.cta-card::after {
    content: "";
    position: absolute;
    right: -30px;
    bottom: -30px;
    width: 160px;
    height: 160px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23AEBFCF' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8 21h8M12 17v4M6 3h12v6a6 6 0 0 1-12 0V3Z'/%3E%3Cpath d='M6 5H2v2a4 4 0 0 0 4 4M18 5h4v2a4 4 0 0 1-4 4'/%3E%3C/svg%3E") no-repeat center / contain;
    opacity: 0.12;
}

.cta-text h2 {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.cta-text p {
    font-size: 15px;
    color: #AEBFCF;
}

.cta-card .btn-accent {
    position: relative;
    z-index: 2;
    padding: 12px 32px;
    font-size: 15px;
}

/* ===== 页脚 ===== */
.site-footer {
    background: var(--dark-block);
    color: #AEBFCF;
    padding: 64px 0 0;
}

.footer-top {
    padding-bottom: 48px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(174, 191, 207, 0.15);
}

.footer-brand .brand {
    margin-bottom: 6px;
}

.footer-brand .brand-name {
    color: #fff;
}

.footer-brand .brand-sub {
    background: rgba(232, 152, 46, 0.2);
    color: var(--accent);
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: #AEBFCF;
    margin-top: 12px;
    max-width: 300px;
}

.footer-col h3 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 18px;
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: #AEBFCF;
    margin-bottom: 10px;
    transition: color var(--transition);
}

.footer-col a:hover {
    color: #fff;
}

.footer-contact p {
    font-size: 14px;
    line-height: 1.7;
    color: #AEBFCF;
    margin-bottom: 6px;
}

.footer-contact a {
    display: inline;
    color: var(--accent);
}

.footer-contact a:hover {
    color: var(--accent-dark);
}

.footer-bottom {
    padding: 20px 0;
    border-top: 1px solid rgba(174, 191, 207, 0.12);
}

.footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: #78899B;
}

.footer-bottom-inner span {
    font-size: 13px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .site-header {
        height: 64px;
    }

    .main-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px;
        gap: 4px;
        border-bottom: 1px solid var(--border-line);
        box-shadow: 0 12px 24px rgba(21, 42, 64, 0.08);
        transform: translateY(-12px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 99;
    }

    .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        width: 100%;
        padding: 12px 16px;
        font-size: 16px;
    }

    .nav-link.active::after {
        display: none;
    }

    .nav-link.active {
        background: var(--brand-light);
    }

    .desktop-actions {
        display: none;
    }

    .menu-toggle {
        display: inline-flex;
    }

    .article-banner {
        padding: 40px 0 32px;
    }

    .article-main {
        padding: 24px 0 12px;
    }

    .article-cards {
        padding: 24px;
    }

    .article-container,
    .related-wrap {
        padding: 0 16px;
    }

    .article-title {
        font-size: 26px;
    }

    .article-body {
        font-size: 15px;
    }

    .article-body h2 {
        font-size: 20px;
    }

    .related-item {
        gap: 12px;
        padding: 10px;
    }

    .related-thumb {
        width: 84px;
        height: 62px;
    }

    .cta-card {
        padding: 28px 24px;
        flex-direction: column;
        align-items: flex-start;
    }

    .cta-text h2 {
        font-size: 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

@media (max-width: 520px) {
    .article-card {
        padding: 24px 20px;
    }

    .article-title {
        font-size: 22px;
    }

    .article-meta {
        font-size: 13px;
        gap: 6px;
        flex-wrap: wrap;
    }

    .related-thumb {
        width: 72px;
        height: 54px;
    }

    .related-info h3 {
        font-size: 14px;
    }

    .cta-card {
        padding: 24px 18px;
    }

    .brand-name {
        font-size: 19px;
    }

    .brand-sub {
        font-size: 12px;
        padding: 1px 8px;
    }
}

@media (max-width: 480px) {
    .main-nav {
        top: 64px;
    }

    .article-container,
    .related-wrap {
        padding: 0 14px;
    }

    .breadcrumb .current {
        max-width: 200px;
    }
}

/* roulang page: category1 */
:root {
            --brand: #2F6FCF;
            --brand-dark: #1E56B0;
            --brand-light: #EBF2FC;
            --accent: #E8982E;
            --accent-dark: #C97F1F;
            --accent-light: #FDF3E7;
            --bg: #F5F8FC;
            --card: #FFFFFF;
            --border: #E1E8F2;
            --title: #1E2A38;
            --text: #334155;
            --muted: #6B7A90;
            --dark: #152A40;
            --dark-text: #AEBFCF;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow: 0 6px 20px rgba(21, 42, 64, 0.05);
            --shadow-hover: 0 12px 32px rgba(21, 42, 64, 0.12);
            --container: 1200px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input {
            font-family: inherit;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 32px;
        }
        .section {
            padding: 96px 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-head .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand);
            background: var(--brand-light);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--title);
            line-height: 1.3;
            position: relative;
            display: inline-block;
            padding-bottom: 14px;
        }
        .section-head h2::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 42px;
            height: 3px;
            background: var(--accent);
            border-radius: 999px;
        }
        .section-head p {
            margin-top: 16px;
            color: var(--muted);
            font-size: 16px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 80px;
            background: rgba(245, 248, 252, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: box-shadow .25s ease, background .25s ease, border-color .25s ease;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.97);
            box-shadow: 0 6px 20px rgba(21, 42, 64, 0.06);
            border-bottom-color: rgba(225, 232, 242, 0.8);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-mark {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--brand-light);
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: background .2s ease, color .2s ease;
        }
        .brand:hover .brand-mark {
            background: var(--brand);
            color: #fff;
        }
        .brand-name {
            font-size: 22px;
            font-weight: 800;
            color: var(--title);
            letter-spacing: -0.01em;
        }
        .brand-sub {
            font-size: 13px;
            font-weight: 600;
            color: var(--brand);
            background: var(--accent-light);
            padding: 2px 8px;
            border-radius: 999px;
            line-height: 1.5;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 8px 2px;
            position: relative;
            transition: color .2s ease;
            white-space: nowrap;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: 999px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .25s ease;
        }
        .nav-link:hover {
            color: var(--brand);
        }
        .nav-link.active {
            color: var(--brand);
            font-weight: 600;
        }
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            transition: all .2s ease;
            line-height: 1.5;
        }
        .btn-ghost {
            background: transparent;
            color: var(--text);
            border: 1px solid transparent;
        }
        .btn-ghost:hover {
            color: var(--brand);
            background: var(--brand-light);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 16px rgba(232, 152, 46, 0.25);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 22px rgba(232, 152, 46, 0.32);
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            color: var(--title);
            border: 1px solid var(--border);
            background: #fff;
            transition: all .2s ease;
        }
        .menu-toggle:hover {
            border-color: var(--brand);
            color: var(--brand);
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, rgba(235, 242, 252, 0.96), rgba(245, 248, 252, 0.92)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
        }
        .page-hero .hero-inner {
            max-width: 860px;
        }
        .page-hero .page-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand);
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(47, 111, 207, 0.15);
            backdrop-filter: blur(6px);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 20px;
        }
        .page-hero h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--title);
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 18px;
        }
        .page-hero .hero-desc {
            font-size: 17px;
            color: var(--text);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 32px;
        }
        .hero-data {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid rgba(225, 232, 242, 0.7);
        }
        .hero-data .data-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .hero-data .data-item svg {
            color: var(--brand);
            flex-shrink: 0;
        }
        .hero-data .data-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--title);
            font-feature-settings: "tnum";
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .hero-data .data-label {
            font-size: 13px;
            color: var(--muted);
        }

        /* Card Grids */
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-bottom: 28px;
        }
        .card-grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .info-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform .25s ease, box-shadow .25s ease;
            display: flex;
            flex-direction: column;
        }
        .info-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .info-card .card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--brand-light);
        }
        .info-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .info-card:hover .card-cover img {
            transform: scale(1.04);
        }
        .info-card .card-cover .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(21, 42, 64, 0) 55%, rgba(21, 42, 64, 0.55) 100%);
        }
        .info-card .card-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .info-card .card-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--brand-light);
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }
        .info-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--title);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .info-card p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.7;
            flex: 1;
        }
        .info-card .card-link {
            margin-top: 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .2s ease, color .2s ease;
        }
        .info-card .card-link:hover {
            gap: 10px;
            color: var(--brand-dark);
        }
        @media (min-width: 993px) {
            .card-grid-2 .info-card:nth-child(2) {
                transform: translateY(32px);
            }
            .card-grid-2 .info-card:nth-child(2):hover {
                transform: translateY(26px);
            }
        }

        /* Format grid */
        .format-section {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .format-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .format-item {
            padding: 28px 24px;
            border-radius: var(--radius-md);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: all .25s ease;
        }
        .format-item:hover {
            background: var(--brand-light);
            border-color: rgba(47, 111, 207, 0.25);
            transform: translateY(-4px);
        }
        .format-item .fmt-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: #fff;
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            box-shadow: 0 2px 8px rgba(21, 42, 64, 0.06);
        }
        .format-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--title);
            margin-bottom: 8px;
        }
        .format-item p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.65;
        }

        /* Hot List */
        .hot-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 900px;
            margin: 0 auto;
        }
        .hot-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 18px 24px;
            box-shadow: var(--shadow);
            transition: all .25s ease;
            position: relative;
            overflow: hidden;
        }
        .hot-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--brand);
            opacity: 0;
            transition: opacity .2s ease;
        }
        .hot-item:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(47, 111, 207, 0.25);
        }
        .hot-item:hover::before {
            opacity: 1;
        }
        .hot-rank {
            font-size: 28px;
            font-weight: 800;
            color: var(--border);
            font-feature-settings: "tnum";
            min-width: 52px;
            text-align: center;
            line-height: 1;
            letter-spacing: -0.02em;
            transition: color .2s ease;
        }
        .hot-item:nth-child(1) .hot-rank {
            color: var(--accent);
        }
        .hot-item:nth-child(2) .hot-rank {
            color: var(--brand);
        }
        .hot-item:nth-child(3) .hot-rank {
            color: var(--muted);
        }
        .hot-info {
            flex: 1;
            min-width: 0;
        }
        .hot-info h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--title);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color .2s ease;
        }
        .hot-item:hover .hot-info h3 {
            color: var(--brand);
        }
        .hot-info p {
            font-size: 13px;
            color: var(--muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .hot-tag {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .hot-tag.high {
            background: var(--accent);
            color: #fff;
        }
        .hot-tag.mid {
            background: var(--brand-light);
            color: var(--brand);
        }
        .hot-date {
            font-size: 13px;
            color: var(--muted);
            white-space: nowrap;
            flex-shrink: 0;
            font-feature-settings: "tnum";
        }

        /* Scenario */
        .scenario-section {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scenario-card {
            text-align: center;
            padding: 36px 28px;
            border-radius: var(--radius-lg);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: all .25s ease;
        }
        .scenario-card:hover {
            background: var(--card);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(47, 111, 207, 0.2);
        }
        .scenario-card .scn-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: var(--brand-light);
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }
        .scenario-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--title);
            margin-bottom: 10px;
        }
        .scenario-card p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.7;
        }

        /* Flow */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            position: relative;
            max-width: 960px;
            margin: 0 auto;
        }
        .flow-grid::before {
            content: "";
            position: absolute;
            top: 34px;
            left: 15%;
            right: 15%;
            height: 2px;
            background: var(--border);
        }
        .flow-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .flow-num {
            width: 68px;
            height: 68px;
            border-radius: 50%;
            background: var(--brand);
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            box-shadow: 0 8px 20px rgba(47, 111, 207, 0.2);
            font-feature-settings: "tnum";
        }
        .flow-step:nth-child(2) .flow-num {
            background: var(--accent);
            box-shadow: 0 8px 20px rgba(232, 152, 46, 0.22);
        }
        .flow-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--title);
            margin-bottom: 8px;
        }
        .flow-step p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.65;
            max-width: 240px;
            margin: 0 auto;
        }

        /* FAQ */
        .faq-section {
            background: #fff;
            border-top: 1px solid var(--border);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 24px 8px;
            font-size: 16px;
            font-weight: 500;
            color: var(--title);
            text-align: left;
            transition: color .2s ease;
            line-height: 1.5;
        }
        .faq-question:hover {
            color: var(--brand);
        }
        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--bg);
            color: var(--muted);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all .3s ease;
            font-size: 20px;
            font-weight: 300;
            line-height: 1;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--brand-light);
            color: var(--brand);
        }
        .faq-item.open .faq-question {
            color: var(--brand);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease;
            padding: 0 8px;
            font-size: 15px;
            color: var(--muted);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 8px 24px;
        }

        /* CTA strip */
        .cta-strip {
            padding: 36px 0;
            background: #EEF3F9;
            border-bottom: 1px solid var(--border);
        }
        .cta-strip-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            font-size: 16px;
            color: var(--text);
            flex-wrap: wrap;
            text-align: center;
        }
        .cta-strip .cta-link {
            font-weight: 700;
            color: var(--brand);
            padding: 8px 20px;
            border-radius: 999px;
            background: #fff;
            border: 1px solid rgba(47, 111, 207, 0.2);
            transition: all .2s ease;
            font-size: 15px;
        }
        .cta-strip .cta-link:hover {
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
            box-shadow: 0 6px 16px rgba(47, 111, 207, 0.2);
        }

        /* Footer */
        .site-footer {
            background: var(--dark);
            padding-top: 64px;
            border-top: 2px solid var(--accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand .brand {
            margin-bottom: 16px;
        }
        .footer-brand .brand-mark {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }
        .footer-brand .brand-name {
            color: #fff;
        }
        .footer-brand .brand-sub {
            background: rgba(232, 152, 46, 0.15);
            color: var(--accent);
        }
        .footer-brand p {
            color: var(--dark-text);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h3 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            color: var(--dark-text);
            font-size: 14px;
            padding: 6px 0;
            transition: color .2s ease;
        }
        .footer-col a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .footer-contact p {
            color: var(--dark-text);
            font-size: 14px;
            padding: 6px 0;
            line-height: 1.6;
        }
        .footer-contact a {
            display: inline;
            color: #fff;
        }
        .footer-contact a:hover {
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
        }
        .footer-bottom-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            color: var(--dark-text);
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-3 .info-card:last-child {
                grid-column: span 2;
            }
            .card-grid-2 {
                grid-template-columns: 1fr 1fr;
            }
            .format-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 64px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .site-header {
                height: 64px;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 24px 28px;
                box-shadow: 0 16px 40px rgba(21, 42, 64, 0.12);
                display: none;
                gap: 8px;
                border-bottom: 1px solid var(--border);
            }
            .main-nav.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                padding: 12px 4px;
                font-size: 16px;
                border-bottom: 1px solid rgba(225, 232, 242, 0.6);
            }
            .nav-link:last-of-type {
                border-bottom: none;
            }
            .nav-link::after {
                display: none;
            }
            .desktop-actions {
                display: none;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .page-hero {
                padding: 56px 0 52px;
            }
            .page-hero h1 {
                font-size: 34px;
            }
            .page-hero .hero-desc {
                font-size: 15px;
            }
            .hero-data {
                gap: 24px;
                flex-direction: column;
            }
            .card-grid-3,
            .card-grid-2,
            .format-grid,
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .card-grid-3 .info-card:last-child {
                grid-column: auto;
            }
            .card-grid-2 .info-card:nth-child(2) {
                transform: none;
            }
            .hot-item {
                flex-wrap: wrap;
                gap: 12px;
                padding: 16px;
            }
            .hot-info {
                min-width: calc(100% - 68px);
            }
            .hot-info h3 {
                white-space: normal;
            }
            .hot-info p {
                white-space: normal;
            }
            .hot-date {
                margin-left: 68px;
            }
            .flow-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .flow-grid::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .faq-question {
                font-size: 15px;
                padding: 20px 4px;
            }
            .cta-strip-inner {
                flex-direction: column;
                gap: 10px;
            }
        }
        @media (max-width: 520px) {
            .brand-name {
                font-size: 18px;
            }
            .brand-sub {
                font-size: 12px;
                padding: 1px 6px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-data .data-num {
                font-size: 22px;
            }
            .info-card .card-body {
                padding: 22px;
            }
            .hot-tag {
                font-size: 11px;
                padding: 2px 10px;
            }
            .hot-date {
                font-size: 12px;
                margin-left: 68px;
            }
            .format-grid {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom-inner {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

/* roulang page: category3 */
:root {
            --brand: #2F6FCF;
            --brand-dark: #1E56B0;
            --brand-light: #EBF2FC;
            --gold: #E8982E;
            --gold-dark: #C97F1F;
            --gold-light: #FDF3E7;
            --page-bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --card-border: #E1E8F2;
            --title-color: #1E2A38;
            --body-color: #334155;
            --muted-color: #6B7A90;
            --dark-block: #152A40;
            --dark-text: #AEBFCF;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow-card: 0 6px 20px rgba(21, 42, 64, 0.05);
            --shadow-hover: 0 12px 32px rgba(21, 42, 64, 0.12);
            --transition: all 0.2s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            margin: 0;
            background: var(--page-bg);
            color: var(--body-color);
            line-height: 1.75;
            font-size: 16px;
        }
        a {
            color: var(--brand);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--brand-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 80px;
            background: rgba(245, 248, 252, 0.85);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: #fff;
            border-bottom-color: var(--card-border);
            box-shadow: 0 4px 20px rgba(21, 42, 64, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 800;
            color: var(--title-color);
        }
        .brand:hover {
            color: var(--title-color);
        }
        .brand-mark {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--brand);
            border-radius: 10px;
            color: #fff;
        }
        .brand-name {
            letter-spacing: 0.5px;
        }
        .brand-sub {
            font-size: 13px;
            font-weight: 500;
            color: var(--muted-color);
            background: var(--brand-light);
            padding: 2px 8px;
            border-radius: 999px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--body-color);
            padding: 8px 2px;
            position: relative;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--brand);
        }
        .nav-link.active {
            color: var(--brand);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-ghost {
            background: transparent;
            color: var(--body-color);
            border: 1px solid transparent;
        }
        .btn-ghost:hover {
            color: var(--brand);
            background: var(--brand-light);
        }
        .btn-accent {
            background: var(--gold);
            color: #fff;
            box-shadow: 0 4px 14px rgba(232, 152, 46, 0.3);
        }
        .btn-accent:hover {
            background: var(--gold-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 152, 46, 0.35);
        }
        .btn-primary {
            background: var(--brand);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--brand-dark);
            color: #fff;
        }
        .btn-outline {
            background: #fff;
            color: var(--brand);
            border: 1px solid var(--brand);
        }
        .btn-outline:hover {
            background: var(--brand-light);
            color: var(--brand-dark);
        }
        .menu-toggle {
            display: none;
            background: transparent;
            border: none;
            cursor: pointer;
            color: var(--title-color);
            padding: 6px;
            border-radius: 8px;
        }
        .menu-toggle:hover {
            background: var(--brand-light);
        }
        @media (max-width: 768px) {
            .site-header,
            .header-inner {
                height: 64px;
            }
            .header-inner {
                height: 64px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--card-border);
                box-shadow: 0 12px 32px rgba(21, 42, 64, 0.08);
            }
            .main-nav.open {
                display: flex;
            }
            .desktop-actions {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            background-color: var(--brand-light);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 80px 0 72px;
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(235, 242, 252, 0.92) 40%, rgba(235, 242, 252, 0.65) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero-content {
            max-width: 720px;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--title-color);
            margin: 0 0 16px;
            letter-spacing: 1px;
        }
        .page-hero p {
            font-size: 16px;
            color: var(--muted-color);
            line-height: 1.8;
            margin: 0;
            max-width: 560px;
        }
        .page-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(47, 111, 207, 0.2);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--brand);
            margin-bottom: 20px;
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 48px 0 40px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
        }

        /* Section */
        .section {
            padding: 80px 0;
        }
        .section-tight {
            padding: 56px 0;
        }
        .section-header {
            margin-bottom: 48px;
            max-width: 680px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--title-color);
            margin: 0 0 12px;
        }
        .section-header p {
            font-size: 15px;
            color: var(--muted-color);
            margin: 0;
        }
        .section-header.center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }
        .section-header.center::after {
            content: "";
            display: block;
            width: 48px;
            height: 3px;
            background: var(--gold);
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* Cards */
        .feature-card {
            background: #fff;
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--brand);
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--brand-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--brand);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--title-color);
            margin: 0 0 10px;
        }
        .feature-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--muted-color);
            margin: 0;
        }

        /* Content cards */
        .content-card {
            background: #fff;
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .content-card-img {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--brand-light);
        }
        .content-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .content-card:hover .content-card-img img {
            transform: scale(1.03);
        }
        .content-card-body {
            padding: 24px 24px 28px;
            flex: 1;
        }
        .content-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--title-color);
            margin: 0 0 8px;
            line-height: 1.5;
        }
        .content-card-body p {
            font-size: 14px;
            color: var(--muted-color);
            margin: 0 0 14px;
            line-height: 1.65;
        }
        .content-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--muted-color);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            line-height: 1.6;
        }
        .badge-blue {
            background: var(--brand-light);
            color: var(--brand);
        }
        .badge-gold {
            background: var(--gold);
            color: #fff;
        }

        /* Offset grid for staggered cards */
        .offset-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            margin-top: 32px;
        }
        .offset-grid .content-card.offset-item {
            margin-top: 0;
        }
        .offset-grid .content-card.offset-item:nth-child(2) {
            transform: translateY(32px);
        }
        @media (max-width: 768px) {
            .offset-grid {
                grid-template-columns: 1fr;
            }
            .offset-grid .content-card.offset-item:nth-child(2) {
                transform: none;
            }
        }

        /* Scenarios */
        .scenario-steps {
            display: flex;
            gap: 32px;
        }
        .scenario-item {
            flex: 1;
            background: #fff;
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
        }
        .scenario-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .scenario-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--brand-light);
            color: var(--brand);
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .scenario-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--title-color);
            margin: 0 0 10px;
        }
        .scenario-item p {
            font-size: 14px;
            color: var(--muted-color);
            margin: 0;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .scenario-steps {
                flex-direction: column;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--card-border);
            padding: 8px 0;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--card-border);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 4px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--title-color);
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--brand);
        }
        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--brand-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand);
            transition: var(--transition);
            font-size: 18px;
            font-weight: 400;
            line-height: 1;
        }
        .faq-item.open .faq-question {
            color: var(--brand);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--brand);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-answer p {
            padding: 0 4px 20px;
            margin: 0;
            font-size: 15px;
            line-height: 1.7;
            color: var(--muted-color);
        }

        /* CTA bar */
        .cta-bar {
            background: #fff;
            border-top: 1px solid var(--card-border);
            border-bottom: 1px solid var(--card-border);
            padding: 40px 0;
            margin-top: 32px;
        }
        .cta-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-bar-text {
            font-size: 16px;
            color: var(--title-color);
            font-weight: 500;
        }
        .cta-bar-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .cta-bar-link:hover {
            color: var(--brand-dark);
            gap: 10px;
        }

        /* Footer */
        .site-footer {
            background: var(--dark-block);
            padding: 64px 0 0;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .brand {
            color: #fff;
        }
        .footer-brand .brand:hover {
            color: #fff;
        }
        .footer-brand .brand-mark {
            background: var(--gold);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--dark-text);
            line-height: 1.7;
            margin: 16px 0 0;
            max-width: 280px;
        }
        .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--dark-text);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-contact p {
            font-size: 14px;
            color: var(--dark-text);
            margin: 0 0 6px;
        }
        .footer-contact a {
            display: inline;
        }
        .footer-bottom {
            padding: 20px 0;
        }
        .footer-bottom-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom-inner {
                flex-direction: column;
                gap: 4px;
                text-align: center;
            }
        }

        /* Animations */
        .fade-in-up {
            opacity: 0;
            transform: translateY(16px);
            animation: fadeInUp 0.4s ease forwards;
        }
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

/* roulang page: category2 */
:root {
  --primary: #2F6FCF;
  --primary-hover: #1E56B0;
  --primary-light: #EBF2FC;
  --accent: #E8982E;
  --accent-hover: #C97F1F;
  --accent-light: #FDF3E7;
  --page-bg: #F5F8FC;
  --surface: #FFFFFF;
  --border: #E1E8F2;
  --text-title: #1E2A38;
  --text-body: #334155;
  --text-muted: #6B7A90;
  --deep-bg: #152A40;
  --deep-text: #AEBFCF;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow-card: 0 6px 20px rgba(21, 42, 64, 0.05);
  --shadow-hover: 0 12px 32px rgba(21, 42, 64, 0.12);
  --transition: 0.2s ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--page-bg);
  color: var(--text-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
@media (max-width: 768px) { .container { padding-left: 16px; padding-right: 16px; } }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(245, 248, 252, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: all .2s ease;
  height: 80px;
}
.site-header.scrolled { background: #fff; border-bottom-color: var(--border); box-shadow: 0 4px 16px rgba(21,42,64,.08); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 80px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.brand-mark {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--primary-light); color: var(--primary);
}
.brand-name { font-size: 22px; font-weight: 800; color: var(--text-title); letter-spacing: -.02em; }
.brand-sub {
  font-size: 13px; font-weight: 400; color: var(--text-muted);
  background: var(--primary-light); padding: 2px 8px; border-radius: 999px;
}
.main-nav { display: flex; align-items: center; gap: 30px; }
.nav-link {
  font-size: 15px; font-weight: 500; color: var(--text-body);
  padding: 8px 2px; position: relative; transition: color .2s ease;
}
.nav-link::after {
  content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px;
  background: var(--accent); border-radius: 2px; opacity: 0;
  transform: translateY(4px); transition: all .2s ease;
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { opacity: 1; transform: translateY(0); }
.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 8px; font-size: 14px; font-weight: 600;
  padding: 12px 26px; cursor: pointer; transition: all .2s ease;
  border: 1px solid transparent; line-height: 1.4; white-space: nowrap;
}
.btn:focus-visible { outline: 3px solid rgba(47,111,207,.18); outline-offset: 2px; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(232,152,46,.3); }
.btn-accent:active { transform: translateY(0); }
.btn-ghost { background: transparent; color: var(--text-body); border: none; }
.btn-ghost:hover { color: var(--primary); background: var(--primary-light); }
.btn-outline { background: #fff; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.menu-toggle { display: none; background: none; border: none; color: var(--text-title); padding: 8px; border-radius: 8px; }
.menu-toggle:hover { background: var(--primary-light); }

@media (max-width: 768px) {
  .site-header, .header-inner { height: 64px; }
  .main-nav {
    position: fixed; top: 64px; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: flex-start;
    padding: 16px 24px 24px; gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(21,42,64,.1);
    transform: translateY(-130%); opacity: 0; pointer-events: none;
    transition: all .3s ease;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-link { display: block; width: 100%; padding: 12px 8px; border-radius: 8px; font-size: 16px; }
  .nav-link::after { display: none; }
  .nav-link.active { background: var(--primary-light); }
  .desktop-actions { display: none; }
  .menu-toggle { display: flex; }
}

/* ===== Section 通用 ===== */
.section { padding: 100px 0; }
@media (max-width: 768px) { .section { padding: 64px 0; } }
.section-header { text-align: center; max-width: 680px; margin: 0 auto 64px; }
.section-tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; color: var(--primary);
  background: var(--primary-light); border-radius: 999px; padding: 6px 16px; margin-bottom: 16px;
}
.section-header h2 { font-size: 32px; font-weight: 700; color: var(--text-title); line-height: 1.3; }
.section-header p { margin-top: 12px; font-size: 15px; color: var(--text-muted); line-height: 1.7; }
@media (max-width: 768px) { .section-header h2 { font-size: 26px; } .section-header { margin-bottom: 40px; } }

/* ===== Hero 分类页头部 ===== */
.hero-category {
  position: relative;
  background-color: var(--primary-light);
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  padding: 110px 0 100px;
  overflow: hidden;
}
.hero-category::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(235,242,252,.96) 0%, rgba(235,242,252,.88) 55%, rgba(235,242,252,.68) 100%);
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--primary);
  background: rgba(255,255,255,.85); border: 1px solid rgba(47,111,207,.2);
  border-radius: 999px; padding: 6px 18px; margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.hero-content h1 { font-size: 48px; font-weight: 800; color: var(--text-title); line-height: 1.15; }
.hero-content .hero-desc { margin-top: 16px; font-size: 16px; color: var(--text-body); max-width: 560px; line-height: 1.75; }
.hero-actions { display: flex; gap: 12px; margin-top: 36px; flex-wrap: wrap; }
@media (max-width: 768px) {
  .hero-category { padding: 80px 0 72px; text-align: center; }
  .hero-category::before { background: rgba(235,242,252,.94); }
  .hero-content { margin: 0 auto; }
  .hero-content h1 { font-size: 32px; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-actions .btn { width: 160px; padding: 11px 20px; }
}

/* ===== 数据指标 ===== */
.stats-section { padding: 72px 0 16px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 32px 24px; text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform .2s ease, box-shadow .2s ease;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.stat-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--primary-light); color: var(--primary); margin-bottom: 12px;
}
.stat-number {
  font-family: "DIN Alternate", "PingFang SC", sans-serif;
  font-size: 32px; font-weight: 800; color: var(--text-title);
  letter-spacing: -.02em; line-height: 1.2;
}
.stat-label { font-size: 14px; color: var(--text-muted); margin-top: 6px; }
.stat-note { font-size: 12px; color: #9AA8BA; margin-top: 2px; }
@media (max-width: 1024px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .stats-grid { grid-template-columns: 1fr 1fr; gap: 14px; } .stat-card { padding: 20px 16px; } .stat-number { font-size: 26px; } }

/* ===== 核心能力卡片 ===== */
.features-section { padding: 80px 0 0; }
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.feature-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 28px 28px 32px; position: relative; overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .2s ease, box-shadow .2s ease;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--primary); opacity: 0; transition: opacity .2s ease;
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--primary-light); color: var(--primary); margin-bottom: 16px;
}
.feature-card h3 { font-size: 18px; font-weight: 600; color: var(--text-title); margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.feature-link {
  display: inline-block; margin-top: 14px; font-size: 13px; font-weight: 500;
  color: var(--primary); transition: color .2s ease;
}
.feature-link:hover { color: var(--primary-hover); text-decoration: underline; }

/* 第4张起：2列交错非对称 */
.features-grid .feature-card:nth-child(4),
.features-grid .feature-card:nth-child(5),
.features-grid .feature-card:nth-child(6) { display: none; }

.features-grid-2 {
  display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 28px;
}
.features-grid-2 .feature-card:nth-child(2) { transform: translateY(18px); }
.features-grid-2 .feature-card:nth-child(2):hover { transform: translateY(15px); }
.features-grid-2 .feature-card:last-child { grid-column: 1 / -1; max-width: calc(50% - 14px); margin-left: auto; margin-right: auto; }
.feature-card.wide { grid-column: 1 / -1; }

@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid-2 { grid-template-columns: 1fr; }
  .features-grid-2 .feature-card:nth-child(2) { transform: none; }
  .features-grid-2 .feature-card:nth-child(2):hover { transform: translateY(-3px); }
  .features-grid-2 .feature-card:last-child { max-width: 100%; margin: 0; }
}
@media (max-width: 768px) {
  .features-grid { grid-template-columns: 1fr; }
  .features-grid-2 { grid-template-columns: 1fr; }
  .features-grid-2 .feature-card:last-child { max-width: 100%; }
}

/* ===== 适用场景 ===== */
.scenarios-section { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.scenarios-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.scenario-card {
  background: var(--page-bg); border: 1px solid var(--border); border-radius: 16px;
  padding: 28px 22px; text-align: center; transition: all .2s ease;
}
.scenario-card:hover { background: #fff; border-color: var(--primary); box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.scenario-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--primary-light); color: var(--primary); margin-bottom: 16px;
}
.scenario-card h3 { font-size: 16px; font-weight: 600; color: var(--text-title); }
.scenario-card p { font-size: 13px; color: var(--text-muted); margin-top: 6px; line-height: 1.6; }
@media (max-width: 1024px) { .scenarios-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .scenarios-grid { grid-template-columns: 1fr; } }

/* ===== 解读流程 ===== */
.process-section { padding: 100px 0; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; }
.process-grid::before {
  content: ''; position: absolute; top: 40px; left: 8%; right: 8%; height: 2px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary), var(--primary-light));
  opacity: .4;
}
.process-step { text-align: center; position: relative; z-index: 1; }
.step-number {
  width: 80px; height: 80px; margin: 0 auto 20px; border-radius: 50%;
  background: var(--surface); border: 2px solid var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800; color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-light); transition: all .2s ease;
}
.process-step:hover .step-number { background: var(--primary); color: #fff; box-shadow: 0 0 0 6px var(--primary-light); }
.process-step h3 { font-size: 16px; font-weight: 600; color: var(--text-title); margin-bottom: 6px; }
.process-step p { font-size: 13px; color: var(--text-muted); line-height: 1.6; max-width: 200px; margin: 0 auto; }
@media (max-width: 1024px) { .process-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; } .process-grid::before { display: none; } }
@media (max-width: 520px) { .process-grid { grid-template-columns: 1fr; } }

/* ===== 数据预览 ===== */
.preview-section { padding: 0 0 100px; }
.preview-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  overflow: hidden; box-shadow: var(--shadow-card);
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 0;
}
.preview-image { position: relative; min-height: 320px; }
.preview-image img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.preview-image::after {
  content: ''; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(90deg, transparent 60%, rgba(255,255,255,.9) 100%);
}
.preview-content { padding: 44px 40px; display: flex; flex-direction: column; justify-content: center; }
.preview-content .tag {
  align-self: flex-start; font-size: 12px; font-weight: 600; color: var(--accent);
  background: var(--accent-light); border-radius: 999px; padding: 4px 14px; margin-bottom: 16px;
}
.preview-content h3 { font-size: 26px; font-weight: 700; color: var(--text-title); line-height: 1.3; }
.preview-content p { font-size: 14px; color: var(--text-muted); margin-top: 12px; line-height: 1.7; }
.preview-points { list-style: none; margin-top: 20px; }
.preview-points li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-body); padding: 6px 0; }
.preview-points li svg { color: var(--primary); flex-shrink: 0; }
@media (max-width: 768px) {
  .preview-card { grid-template-columns: 1fr; }
  .preview-image { min-height: 220px; }
  .preview-image::after { background: linear-gradient(180deg, transparent 60%, rgba(255,255,255,.9) 100%); }
  .preview-content { padding: 32px 24px; }
}

/* ===== FAQ ===== */
.faq-section { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 8px; cursor: pointer; font-size: 16px; font-weight: 500; color: var(--text-title);
  transition: color .2s ease; background: none; border: none; width: 100%; text-align: left;
}
.faq-question:hover { color: var(--primary); }
.faq-question.active { color: var(--primary); }
.faq-icon { flex-shrink: 0; color: var(--text-muted); transition: transform .3s ease, color .3s ease; }
.faq-item.active .faq-icon { transform: rotate(45deg); color: var(--primary); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height .35s ease;
  font-size: 15px; color: var(--text-muted); line-height: 1.7; padding: 0 48px 0 8px;
}
.faq-item.active .faq-answer { max-height: 240px; padding-bottom: 24px; }
@media (max-width: 520px) { .faq-question { font-size: 15px; padding: 18px 4px; } .faq-answer { padding-right: 24px; } }

/* ===== CTA 锦囊条 ===== */
.cta-strip { padding: 60px 0; }
.cta-strip-inner {
  background: #F2F5FA; border: 1px solid var(--border); border-radius: 16px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 40px; flex-wrap: wrap; gap: 16px;
}
.cta-strip-text { font-size: 15px; font-weight: 600; color: var(--text-title); }
.cta-strip-text span { color: var(--text-muted); font-weight: 400; margin-left: 8px; }
.cta-strip-link { font-size: 15px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 4px; transition: color .2s ease; }
.cta-strip-link:hover { color: var(--primary-hover); }
.cta-strip-link svg { transition: transform .2s ease; }
.cta-strip-link:hover svg { transform: translateX(3px); }
@media (max-width: 640px) { .cta-strip-inner { padding: 20px 24px; flex-direction: column; text-align: center; } .cta-strip-text span { display: block; margin-top: 4px; } }

/* ===== Footer ===== */
.site-footer { background: #152A40; color: #AEBFCF; margin-top: 0; }
.site-footer .container { padding-top: 60px; padding-bottom: 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; }
.footer-brand p { font-size: 14px; line-height: 1.6; margin-top: 14px; color: #8CA3B8; max-width: 260px; }
.site-footer .brand { margin-bottom: 8px; }
.site-footer .brand-name { color: #fff; }
.site-footer .brand-sub { background: rgba(255,255,255,.1); color: #AEBFCF; }
.footer-col h3 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-col a { display: block; color: #AEBFCF; font-size: 14px; padding: 4px 0; transition: color .2s ease; }
.footer-col a:hover { color: #fff; }
.footer-contact p { font-size: 14px; line-height: 1.8; }
.footer-contact a { display: inline; padding: 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); margin-top: 48px; padding-top: 20px; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: #7E92A8; flex-wrap: wrap; gap: 8px; }
@media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; gap: 32px; } .footer-bottom-inner { flex-direction: column; text-align: center; } }