/* Original tool presentation, scoped to this detail page. */

		/* 首屏 Banner */
		#yk-portal-v2 .yk-legacy-tool .hero-section {
			background: radial-gradient(1200px 600px at 10% 10%, rgba(59,130,246,.22), transparent),
						radial-gradient(1000px 500px at 90% 20%, rgba(30,58,138,.30), transparent),
						linear-gradient(135deg, #0b1020 0%, #121a2b 45%, #1b2a44 100%);
			position: relative;
			overflow: hidden;
			padding-top: 84px;
			display: flex;
			align-items: center;
			justify-content: center;
			min-height: 64vh;
			color: #fff;
		}
		#yk-portal-v2 .yk-legacy-tool .hero-section::before { content: ''; position: absolute; inset: 0; opacity: .25; }
		#yk-portal-v2 .yk-legacy-tool .hero-content { position: relative; z-index: 2; text-align: center; width: 100%; padding: 52px 20px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; justify-content: center; }
		#yk-portal-v2 .yk-legacy-tool .hero-title { font-size: 3.0rem; font-weight: 800; letter-spacing: .5px; line-height: 1.15; margin-bottom: 1.1rem; text-shadow: 0 8px 30px rgba(0,0,0,.35); margin-left: auto; margin-right: auto; text-align: center; }
		#yk-portal-v2 .yk-legacy-tool .hero-subtitle { font-size: 1.16rem; font-weight: 400; opacity: .96; max-width: 980px; margin: 0 auto 2rem; line-height: 1.85; }
		#yk-portal-v2 .yk-legacy-tool .hero-cta { display: inline-block; padding: 14px 28px; border-radius: 999px; background: #3b82f6; color: #fff; font-weight: 800; text-decoration: none; box-shadow: 0 10px 30px rgba(59,130,246,.35); transition: all .3s ease; margin: 0 auto; }
		#yk-portal-v2 .yk-legacy-tool .hero-cta:hover { transform: translateY(-2px); box-shadow: 0 15px 40px rgba(59,130,246,.5); color: #fff; text-decoration: none; }

		/* 通用区块 */
		#yk-portal-v2 .yk-legacy-tool .content-section { padding: 84px 0; }
		#yk-portal-v2 .yk-legacy-tool .section-header { text-align: center; margin-bottom: 56px; }
		#yk-portal-v2 .yk-legacy-tool .section-title { font-size: 2.2rem; font-weight: 800; color: #1f2937; margin-bottom: .75rem; position: relative; }
		#yk-portal-v2 .yk-legacy-tool .section-title::after { content: ''; position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%); width: 64px; height: 4px; background: linear-gradient(135deg, #2563eb, #1e40af); border-radius: 2px; }
		#yk-portal-v2 .yk-legacy-tool .section-description { font-size: 1.06rem; color: #6b7280; max-width: 860px; margin: 0 auto; line-height: 1.8; }

		/* 多行卡片的行间距（仅作用于内容区块） */
		#yk-portal-v2 .yk-legacy-tool .content-section .row { row-gap: 22px; }

		/* 痛点 */
		#yk-portal-v2 .yk-legacy-tool .pain-points { background: #f8fafc; }
		#yk-portal-v2 .yk-legacy-tool .pain-card { background: #fff; padding: 32px 26px; border-radius: 16px; box-shadow: 0 8px 24px rgba(2,6,23,0.06); text-align: left; margin-bottom: 22px; border: 1px solid rgba(2,6,23,0.06); transition: transform .3s ease, box-shadow .3s ease; height: 100%; }
		#yk-portal-v2 .yk-legacy-tool .pain-card:hover { transform: translateY(-6px); box-shadow: 0 14px 34px rgba(2,6,23,0.12); }
		#yk-portal-v2 .yk-legacy-tool .pain-icon { font-size: 2.0rem; color: #ef4444; margin-bottom: 12px; }
		#yk-portal-v2 .yk-legacy-tool .pain-title { font-size: 1.15rem; font-weight: 800; color: #111827; margin-bottom: 8px; }
		#yk-portal-v2 .yk-legacy-tool .pain-text { color: #6b7280; line-height: 1.7; }

		/* 功能卡片 */
		#yk-portal-v2 .yk-legacy-tool .feature-card { background: #fff; padding: 34px 28px; border-radius: 16px; border: 2px solid transparent; box-shadow: 0 6px 20px rgba(30,58,138,.08); text-align: left; margin-bottom: 22px; transition: all .3s ease; height: 100%; }
		#yk-portal-v2 .yk-legacy-tool .feature-card:hover { transform: translateY(-5px); border-color: #2563eb; box-shadow: 0 16px 36px rgba(30,58,138,.15); }
		#yk-portal-v2 .yk-legacy-tool .feature-icon { width: 64px; height: 64px; background: linear-gradient(135deg, #2563eb, #1e40af); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; color: #fff; font-size: 1.6rem; }
		#yk-portal-v2 .yk-legacy-tool .feature-card .feature-icon i { color: #ffffff !important; text-shadow: 0 2px 6px rgba(0,0,0,.35); filter: drop-shadow(0 1px 2px rgba(0,0,0,.25)); }
		#yk-portal-v2 .yk-legacy-tool .feature-title { font-size: 1.2rem; font-weight: 800; color: #111827; margin-bottom: 8px; }
		#yk-portal-v2 .yk-legacy-tool .feature-description { color: #6b7280; line-height: 1.7; margin-bottom: 8px; }
		#yk-portal-v2 .yk-legacy-tool .feature-benefit { color: #16a34a; font-weight: 700; font-style: italic; }

		/* 应用场景 */
		#yk-portal-v2 .yk-legacy-tool .scenarios { background: #f8fafc; }
		#yk-portal-v2 .yk-legacy-tool .scenario-card { background: #fff; padding: 28px 22px; border-radius: 16px; border: 2px solid transparent; text-align: center; margin-bottom: 22px; box-shadow: 0 6px 20px rgba(30,58,138,.08); transition: all .3s ease; height: 100%; }
		#yk-portal-v2 .yk-legacy-tool .scenario-card:hover { transform: translateY(-5px); border-color: #1e40af; box-shadow: 0 14px 34px rgba(30,58,138,.15); }
		#yk-portal-v2 .yk-legacy-tool .scenario-icon { font-size: 2.0rem; margin-bottom: 12px; color: #1e40af; }
		#yk-portal-v2 .yk-legacy-tool .scenario-title { font-size: 1.1rem; font-weight: 800; color: #111827; margin-bottom: 6px; }
		#yk-portal-v2 .yk-legacy-tool .scenario-description { color: #6b7280; line-height: 1.7; }

		/* 使用步骤 */
		#yk-portal-v2 .yk-legacy-tool .step-card { background: #fff; padding: 28px; border-radius: 16px; box-shadow: 0 6px 20px rgba(30,58,138,.08); margin-bottom: 20px; position: relative; border: 2px solid transparent; transition: all .3s ease; height: 100%; }
		#yk-portal-v2 .yk-legacy-tool .step-card:hover { border-color: #1e40af; box-shadow: 0 12px 30px rgba(30,58,138,.12); }
		#yk-portal-v2 .yk-legacy-tool .step-number { position: absolute; top: 16px; right: 16px; width: 36px; height: 36px; background: linear-gradient(135deg, #2563eb, #1e40af); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; }
		#yk-portal-v2 .yk-legacy-tool .step-title { font-size: 1.15rem; font-weight: 800; color: #111827; margin-bottom: 10px; padding-right: 56px; }
		#yk-portal-v2 .yk-legacy-tool .step-description { color: #6b7280; line-height: 1.7; }

		/* 截图 */
		#yk-portal-v2 .yk-legacy-tool .screenshot-wrap { background: #0b1220; border-radius: 16px; padding: 10px; box-shadow: 0 18px 44px rgba(2,6,23,.35); }
		#yk-portal-v2 .yk-legacy-tool .screenshot-inner { border-radius: 12px; overflow: hidden; border: 1px solid rgba(255,255,255,.08); }
		#yk-portal-v2 .yk-legacy-tool .screenshot-inner img { width: 100%; height: auto; display: block; }

		/* FAQ */
		#yk-portal-v2 .yk-legacy-tool .faq-section { background: #f8fafc; }
		#yk-portal-v2 .yk-legacy-tool .faq-item { background: #fff; margin-bottom: 12px; border-radius: 12px; overflow: hidden; box-shadow: 0 4px 16px rgba(2,6,23,.06); border: 1px solid rgba(2,6,23,.06); }
		#yk-portal-v2 .yk-legacy-tool .faq-question { padding: 20px 26px; background: #fff; border: none; width: 100%; text-align: left; font-size: 1.02rem; font-weight: 800; color: #111827; cursor: pointer; transition: background-color .3s ease; position: relative; }
		#yk-portal-v2 .yk-legacy-tool .faq-question:hover { background: #f9fafb; }
		#yk-portal-v2 .yk-legacy-tool .faq-question::after { content: '+'; position: absolute; right: 24px; top: 50%; transform: translateY(-50%); font-size: 1.3rem; transition: transform .3s ease; }
		#yk-portal-v2 .yk-legacy-tool .faq-question.active::after { transform: translateY(-50%) rotate(45deg); }
		#yk-portal-v2 .yk-legacy-tool .faq-answer { padding: 0 26px; max-height: 0; overflow: hidden; transition: max-height .3s ease, padding .3s ease; }
		#yk-portal-v2 .yk-legacy-tool .faq-answer.show { padding: 16px 26px 22px; max-height: 420px; }
		#yk-portal-v2 .yk-legacy-tool .faq-answer p { color: #6b7280; line-height: 1.8; margin: 0; }

		/* 下载 */
		#yk-portal-v2 .yk-legacy-tool .download-section { background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); color: #fff; text-align: center; }
		#yk-portal-v2 .yk-legacy-tool .download-btn { display: inline-block; background: #ffffff; color: #0f172a; padding: 16px 42px; border-radius: 999px; text-decoration: none; font-size: 1.08rem; font-weight: 800; margin: 16px 10px; transition: all .3s ease; box-shadow: 0 12px 36px rgba(0,0,0,.25); }
		#yk-portal-v2 .yk-legacy-tool .download-btn:hover { transform: translateY(-3px); box-shadow: 0 18px 46px rgba(0,0,0,.35); color: #0f172a; text-decoration: none; }
		#yk-portal-v2 .yk-legacy-tool .system-requirements { margin-top: 12px; font-size: .98rem; opacity: .95; }

		/* 响应式 */
		@media (max-width: 992px) {
			#yk-portal-v2 .yk-legacy-tool .hero-title { font-size: 2.3rem; }
			#yk-portal-v2 .yk-legacy-tool .hero-subtitle { font-size: 1.02rem; }
			#yk-portal-v2 .yk-legacy-tool .content-section { padding: 68px 0; }
		}
		@media (max-width: 576px) {
			#yk-portal-v2 .yk-legacy-tool .hero-section { min-height: 54vh; padding-top: 64px; }
			#yk-portal-v2 .yk-legacy-tool .hero-title { font-size: 1.9rem; line-height: 1.25; }
			#yk-portal-v2 .yk-legacy-tool .hero-subtitle { font-size: .98rem; }
		}
	