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

        #yk-portal-v2 .yk-legacy-tool {
            --vc-navy: #102f46;
            --vc-navy-deep: #0a2234;
            --vc-teal: #087f8c;
            --vc-teal-light: #dff3f2;
            --vc-coral: #e16b4b;
            --vc-yellow: #e7ad39;
            --vc-ink: #182a36;
            --vc-body: #455a68;
            --vc-muted: #6a7d88;
            --vc-line: #d8e3e8;
            --vc-soft: #f3f7f8;
            --vc-white: #ffffff;
            --nav-bg-color: rgba(13, 25, 49, .9);
            --nav-accent: #37b9c1;
        }

        #yk-portal-v2 .yk-legacy-tool * { box-sizing: border-box; }
        #yk-portal-v2 .yk-legacy-tool { scroll-behavior: smooth; }
        #yk-portal-v2 .yk-legacy-tool.product-page {
            margin: 0;
            padding-top: 60px;
            overflow-x: hidden;
            color: var(--vc-body);
            background: var(--vc-white);
            font-family: 'Nunito', 'Microsoft YaHei', 'PingFang SC', sans-serif;
            line-height: 1.75;
        }
        #yk-portal-v2 .yk-legacy-tool a:focus-visible,#yk-portal-v2 .yk-legacy-tool  button:focus-visible,#yk-portal-v2 .yk-legacy-tool  summary:focus-visible { outline: 3px solid #f2bd4f; outline-offset: 3px; }

        #yk-portal-v2 .yk-legacy-tool .navbar {
            padding: 10px 0;
            background-color: var(--nav-bg-color);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            box-shadow: 0 5px 20px rgba(0, 0, 0, .1);
            transition: all .4s ease;
        }
        #yk-portal-v2 .yk-legacy-tool .navbar-scrolled { padding: 8px 0; background-color: rgba(13, 25, 49, .97); box-shadow: 0 5px 20px rgba(0, 0, 0, .2); }
        #yk-portal-v2 .yk-legacy-tool .navbar-brand { display: flex; align-items: center; padding: 0; }
        #yk-portal-v2 .yk-legacy-tool .navbar-brand img { height: 40px; margin-right: 10px; transition: all .3s ease; }
        #yk-portal-v2 .yk-legacy-tool .navbar-scrolled .navbar-brand img { height: 36px; }
        #yk-portal-v2 .yk-legacy-tool .brand-text { color: rgba(255,255,255,.95); font-size: 1.5rem; font-weight: 700; text-shadow: 0 2px 10px rgba(0,0,0,.2); transition: all .3s ease; }
        #yk-portal-v2 .yk-legacy-tool .navbar-scrolled .brand-text { font-size: 1.3rem; }
        #yk-portal-v2 .yk-legacy-tool .nav-item { position: relative; margin: 0 5px; }
        #yk-portal-v2 .yk-legacy-tool .nav-link { position: relative; margin: 0 15px; padding: 10px 0 !important; color: rgba(255,255,255,.9) !important; font-size: 14px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; transition: all .3s ease; }
        #yk-portal-v2 .yk-legacy-tool .nav-link::before { content: ''; position: absolute; bottom: 0; left: 50%; width: 5px; height: 5px; border-radius: 50%; background-color: var(--nav-accent); transform: translateX(-50%) scale(0); transition: transform .3s ease; }
        #yk-portal-v2 .yk-legacy-tool .nav-link:hover::before,#yk-portal-v2 .yk-legacy-tool  .nav-item.active .nav-link::before { transform: translateX(-50%) scale(1); }
        #yk-portal-v2 .yk-legacy-tool .nav-item.active .nav-link { color: var(--nav-accent) !important; }
        #yk-portal-v2 .yk-legacy-tool .nav-item:hover .nav-link { color: #fff !important; transform: translateY(-3px); }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler { padding: 0; border: 0; outline: 0; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler:focus { outline: 0; box-shadow: none; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon { position: relative; width: 24px; height: 17px; background-image: none; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon::before,#yk-portal-v2 .yk-legacy-tool  .navbar-dark .navbar-toggler-icon::after,#yk-portal-v2 .yk-legacy-tool  .navbar-dark .navbar-toggler-icon span { position: absolute; left: 0; width: 100%; height: 2px; border-radius: 3px; background-color: #fff; transition: all .3s ease; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon::before,#yk-portal-v2 .yk-legacy-tool  .navbar-dark .navbar-toggler-icon::after { content: ''; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon::before { top: 0; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon span { top: 50%; transform: translateY(-50%); }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon::after { bottom: 0; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before { transform: translateY(7px) rotate(45deg); }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after { transform: translateY(-7px) rotate(-45deg); }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span { opacity: 0; }

        #yk-portal-v2 .yk-legacy-tool.product-page .hero {
            position: relative;
            height: auto !important;
            min-height: auto !important;
            padding: 5.2rem 0 4.7rem;
            overflow: hidden;
            color: #fff;
            text-align: center;
            background: var(--vc-navy-deep);
        }
        #yk-portal-v2 .yk-legacy-tool.product-page .hero::before,#yk-portal-v2 .yk-legacy-tool .product-page .hero::after { display: none; }
        #yk-portal-v2 .yk-legacy-tool .hero-kicker { display: inline-flex; align-items: center; gap: .5rem; margin: 0 0 1rem; color: #9fe4e2; font-size: .9rem; font-weight: 800; }
        #yk-portal-v2 .yk-legacy-tool.product-page .hero h1 { max-width: 980px; margin: 0 auto .85rem; overflow-wrap: anywhere; color: #fff; font-size: 3rem; font-weight: 800; line-height: 1.25; letter-spacing: 0; }
        #yk-portal-v2 .yk-legacy-tool.product-page .hero .subtitle { max-width: 900px; margin: 0 auto; color: rgba(255,255,255,.9); font-size: 1.06rem; line-height: 1.9; }
        #yk-portal-v2 .yk-legacy-tool .hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem; margin-top: 1.75rem; }
        #yk-portal-v2 .yk-legacy-tool .hero-btn,#yk-portal-v2 .yk-legacy-tool  .download-btn { display: inline-flex; align-items: center; justify-content: center; gap: .55rem; min-height: 46px; padding: .7rem 1.3rem; border: 2px solid #fff; border-radius: 6px; background: #fff; color: var(--vc-navy-deep); font-weight: 800; text-decoration: none; transition: transform .2s ease, background .2s ease, color .2s ease; }
        #yk-portal-v2 .yk-legacy-tool .hero-btn:hover,#yk-portal-v2 .yk-legacy-tool  .download-btn:hover { color: var(--vc-navy-deep); background: #e8f8f7; text-decoration: none; transform: translateY(-2px); }
        #yk-portal-v2 .yk-legacy-tool .hero-btn.secondary,#yk-portal-v2 .yk-legacy-tool  .download-btn.secondary { color: #fff; background: transparent; }
        #yk-portal-v2 .yk-legacy-tool .hero-btn.secondary:hover,#yk-portal-v2 .yk-legacy-tool  .download-btn.secondary:hover { color: #fff; background: rgba(255,255,255,.12); }
        #yk-portal-v2 .yk-legacy-tool .hero-points { display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem 1.5rem; margin: 1.7rem 0 0; padding: 0; list-style: none; color: rgba(255,255,255,.82); font-size: .88rem; }
        #yk-portal-v2 .yk-legacy-tool .hero-points i { margin-right: .35rem; color: #70d3cf; }

        #yk-portal-v2 .yk-legacy-tool .section { padding: 4.5rem 0; }
        #yk-portal-v2 .yk-legacy-tool .section.alt { background: var(--vc-soft); }
        #yk-portal-v2 .yk-legacy-tool .section-head { max-width: 790px; margin: 0 auto 2.6rem; text-align: center; }
        #yk-portal-v2 .yk-legacy-tool .eyebrow { margin-bottom: .4rem; color: var(--vc-teal); font-size: .82rem; font-weight: 800; text-transform: uppercase; }
        #yk-portal-v2 .yk-legacy-tool .section-head h2 { margin: 0; overflow-wrap: anywhere; color: var(--vc-ink); font-size: 2.1rem; font-weight: 800; letter-spacing: 0; }
        #yk-portal-v2 .yk-legacy-tool .section-head p { margin: .75rem 0 0; color: var(--vc-muted); }
        #yk-portal-v2 .yk-legacy-tool .rule { width: 54px; height: 4px; margin: 1rem auto 0; border-radius: 2px; background: var(--vc-coral); }
        #yk-portal-v2 .yk-legacy-tool .info-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
        #yk-portal-v2 .yk-legacy-tool .info-card { height: 100%; padding: 1.45rem 1.3rem; border: 1px solid var(--vc-line); border-radius: 8px; background: #fff; box-shadow: 0 5px 16px rgba(18,48,68,.055); }
        #yk-portal-v2 .yk-legacy-tool .info-card h3 { margin: .8rem 0 .4rem; color: var(--vc-ink); font-size: 1.05rem; font-weight: 800; }
        #yk-portal-v2 .yk-legacy-tool .info-card p { margin: 0; color: var(--vc-muted); font-size: .92rem; }
        #yk-portal-v2 .yk-legacy-tool .icon-box { display: inline-flex; align-items: center; justify-content: center; width: 46px; height: 46px; border-radius: 7px; color: #fff; background: var(--vc-teal); }
        #yk-portal-v2 .yk-legacy-tool .icon-box.coral { background: var(--vc-coral); }
        #yk-portal-v2 .yk-legacy-tool .icon-box.navy { background: var(--vc-navy); }
        #yk-portal-v2 .yk-legacy-tool .icon-box.yellow { color: #2c2a20; background: var(--vc-yellow); }
        #yk-portal-v2 .yk-legacy-tool .pain-card { border-top: 4px solid var(--vc-coral); }
        #yk-portal-v2 .yk-legacy-tool .pain-card:nth-child(2) { border-top-color: var(--vc-yellow); }
        #yk-portal-v2 .yk-legacy-tool .pain-card:nth-child(3) { border-top-color: var(--vc-teal); }
        #yk-portal-v2 .yk-legacy-tool .pain-card:nth-child(4) { border-top-color: var(--vc-navy); }

        #yk-portal-v2 .yk-legacy-tool .feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
        #yk-portal-v2 .yk-legacy-tool .feature-card { padding: 1.65rem 1.45rem; }
        #yk-portal-v2 .yk-legacy-tool .feature-card h3 { font-size: 1.08rem; }
        #yk-portal-v2 .yk-legacy-tool .feature-card strong { color: var(--vc-navy); }
        #yk-portal-v2 .yk-legacy-tool .screenshot-wrap { margin: 2.4rem 0 0; padding: .8rem; border: 1px solid var(--vc-line); border-radius: 8px; background: #fff; box-shadow: 0 14px 34px rgba(18,48,68,.11); }
        #yk-portal-v2 .yk-legacy-tool .screenshot-wrap img { display: block; width: 100%; height: auto; border-radius: 5px; }
        #yk-portal-v2 .yk-legacy-tool .screenshot-wrap figcaption { padding: .75rem .35rem .05rem; color: var(--vc-muted); text-align: center; font-size: .86rem; }

        #yk-portal-v2 .yk-legacy-tool .format-strip { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem; margin-top: 1.6rem; }
        #yk-portal-v2 .yk-legacy-tool .format-strip span { padding: .35rem .65rem; border: 1px solid #bdd6dc; border-radius: 5px; color: var(--vc-navy); background: #eef8f8; font-size: .79rem; font-weight: 800; }
        #yk-portal-v2 .yk-legacy-tool .scenario-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
        #yk-portal-v2 .yk-legacy-tool .scenario { padding: 1.5rem 1.3rem; border-bottom: 3px solid var(--vc-teal); background: #fff; text-align: center; }
        #yk-portal-v2 .yk-legacy-tool .scenario .icon-box { margin-bottom: .75rem; }
        #yk-portal-v2 .yk-legacy-tool .scenario h3 { margin: 0 0 .4rem; color: var(--vc-ink); font-size: 1.05rem; font-weight: 800; }
        #yk-portal-v2 .yk-legacy-tool .scenario p { margin: 0; color: var(--vc-muted); font-size: .91rem; }

        #yk-portal-v2 .yk-legacy-tool .steps { max-width: 920px; margin: 0 auto; counter-reset: steps; }
        #yk-portal-v2 .yk-legacy-tool .step { display: grid; grid-template-columns: 48px 1fr; gap: 1rem; align-items: start; padding: 1.25rem 0; border-bottom: 1px solid var(--vc-line); counter-increment: steps; }
        #yk-portal-v2 .yk-legacy-tool .step:last-child { border-bottom: 0; }
        #yk-portal-v2 .yk-legacy-tool .step::before { content: counter(steps); display: flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 50%; color: #fff; background: var(--vc-navy); font-weight: 800; }
        #yk-portal-v2 .yk-legacy-tool .step h3 { margin: .1rem 0 .3rem; color: var(--vc-ink); font-size: 1.05rem; font-weight: 800; }
        #yk-portal-v2 .yk-legacy-tool .step p { margin: 0; color: var(--vc-muted); font-size: .93rem; }
        #yk-portal-v2 .yk-legacy-tool .notice { max-width: 920px; margin: 1.3rem auto 0; padding: 1rem 1.15rem; border-left: 4px solid var(--vc-yellow); background: #fff9e9; color: #6d592e; }

        #yk-portal-v2 .yk-legacy-tool .faq-list { max-width: 920px; margin: 0 auto; }
        #yk-portal-v2 .yk-legacy-tool .faq-item { margin-bottom: .75rem; border: 1px solid var(--vc-line); border-radius: 8px; background: #fff; }
        #yk-portal-v2 .yk-legacy-tool .faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.15rem; color: var(--vc-ink); cursor: pointer; font-weight: 800; list-style: none; }
        #yk-portal-v2 .yk-legacy-tool .faq-item summary::-webkit-details-marker { display: none; }
        #yk-portal-v2 .yk-legacy-tool .faq-item summary::after { content: '+'; flex: 0 0 auto; color: var(--vc-teal); font-size: 1.4rem; line-height: 1; }
        #yk-portal-v2 .yk-legacy-tool .faq-item[open] summary { background: #eff8f8; }
        #yk-portal-v2 .yk-legacy-tool .faq-item[open] summary::after { content: '-'; }
        #yk-portal-v2 .yk-legacy-tool .faq-answer { padding: 0 1.15rem 1.15rem; color: var(--vc-muted); font-size: .93rem; }

        #yk-portal-v2 .yk-legacy-tool .download-section { padding: 4.4rem 0; color: #fff; text-align: center; background: var(--vc-navy-deep); }
        #yk-portal-v2 .yk-legacy-tool .download-section h2 { margin: 0 0 .55rem; color: #fff; font-size: 2.15rem; font-weight: 800; }
        #yk-portal-v2 .yk-legacy-tool .download-section p { max-width: 760px; margin: 0 auto 1.45rem; color: rgba(255,255,255,.88); }
        #yk-portal-v2 .yk-legacy-tool .download-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem; }
        #yk-portal-v2 .yk-legacy-tool .download-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem 1.5rem; margin-top: 1.2rem; color: rgba(255,255,255,.82); font-size: .86rem; }
        #yk-portal-v2 .yk-legacy-tool .download-meta i { margin-right: .35rem; color: #70d3cf; }

        @media (max-width: 991px) {
            #yk-portal-v2 .yk-legacy-tool .navbar-collapse { margin-top: 15px; padding: 20px; border-radius: 8px; background-color: rgba(13,25,49,.98); box-shadow: 0 10px 30px rgba(0,0,0,.15); }
            #yk-portal-v2 .yk-legacy-tool .navbar-nav .nav-item { margin: 5px 0; }
            #yk-portal-v2 .yk-legacy-tool .navbar-brand img { height: 36px; }
            #yk-portal-v2 .yk-legacy-tool .brand-text { font-size: 1.3rem; }
            #yk-portal-v2 .yk-legacy-tool .info-grid,#yk-portal-v2 .yk-legacy-tool  .scenario-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
            #yk-portal-v2 .yk-legacy-tool .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
        }
        @media (max-width: 767px) {
            #yk-portal-v2 .yk-legacy-tool.product-page { padding-top: 58px; }
            #yk-portal-v2 .yk-legacy-tool.product-page .hero { padding: 4.1rem 0 3.5rem; }
            #yk-portal-v2 .yk-legacy-tool.product-page .hero h1 { font-size: 2rem; }
            #yk-portal-v2 .yk-legacy-tool.product-page .hero .subtitle { font-size: .96rem; text-align: left; }
            #yk-portal-v2 .yk-legacy-tool .section { padding: 3.3rem 0; }
            #yk-portal-v2 .yk-legacy-tool .section-head { margin-bottom: 2rem; }
            #yk-portal-v2 .yk-legacy-tool .section-head h2,#yk-portal-v2 .yk-legacy-tool  .download-section h2 { font-size: 1.55rem; }
            #yk-portal-v2 .yk-legacy-tool .info-grid,#yk-portal-v2 .yk-legacy-tool  .feature-grid,#yk-portal-v2 .yk-legacy-tool  .scenario-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            #yk-portal-v2 .yk-legacy-tool .navbar-brand img { height: 32px; }
            #yk-portal-v2 .yk-legacy-tool .brand-text { font-size: 1.2rem; }
            #yk-portal-v2 .yk-legacy-tool .hero-actions,#yk-portal-v2 .yk-legacy-tool  .download-actions { flex-direction: column; align-items: stretch; }
            #yk-portal-v2 .yk-legacy-tool .hero-points { justify-content: flex-start; text-align: left; }
            #yk-portal-v2 .yk-legacy-tool .step { grid-template-columns: 42px 1fr; gap: .75rem; }
        }
        @media (prefers-reduced-motion: reduce) {
            #yk-portal-v2 .yk-legacy-tool { scroll-behavior: auto; }
            #yk-portal-v2 .yk-legacy-tool *,#yk-portal-v2 .yk-legacy-tool  *::before,#yk-portal-v2 .yk-legacy-tool  *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
        }