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

        #yk-portal-v2 .yk-legacy-tool {
            --ink: #182128;
            --ink-soft: #52616b;
            --paper: #ffffff;
            --mist: #f4f7f7;
            --line: #dbe3e4;
            --coral: #e84b38;
            --coral-dark: #bd3022;
            --teal: #087f75;
            --amber: #d78b12;
            --green: #27834a;
            --navy: #16212a;
            --shadow: 0 14px 34px rgba(24, 33, 40, 0.11);
        }

        #yk-portal-v2 .yk-legacy-tool { scroll-behavior: smooth; }
        #yk-portal-v2 .yk-legacy-tool {
            color: var(--ink);
            background: var(--paper);
            font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
            letter-spacing: 0;
            overflow-x: hidden;
        }
        #yk-portal-v2 .yk-legacy-tool,#yk-portal-v2 .yk-legacy-tool  p,#yk-portal-v2 .yk-legacy-tool  a,#yk-portal-v2 .yk-legacy-tool  li,#yk-portal-v2 .yk-legacy-tool  button,#yk-portal-v2 .yk-legacy-tool  h1,#yk-portal-v2 .yk-legacy-tool  h2,#yk-portal-v2 .yk-legacy-tool  h3,#yk-portal-v2 .yk-legacy-tool  h4,#yk-portal-v2 .yk-legacy-tool  h5,#yk-portal-v2 .yk-legacy-tool  h6 { letter-spacing: 0; }
        #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 rgba(8, 127, 117, 0.35);
            outline-offset: 3px;
        }

        #yk-portal-v2 .yk-legacy-tool .navbar {
            z-index: 1030;
            background: rgba(22, 33, 42, 0.97);
            padding: 10px 0;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.18);
            transition: padding 0.25s ease, background-color 0.25s ease;
        }
        #yk-portal-v2 .yk-legacy-tool .navbar.navbar-scrolled { background: rgba(22, 33, 42, 0.99); padding: 8px 0; }
        #yk-portal-v2 .yk-legacy-tool .navbar-brand { display: flex; align-items: center; padding: 0; }
        #yk-portal-v2 .yk-legacy-tool .navbar-brand img {
            width: 40px;
            height: 40px;
            max-width: 40px;
            object-fit: contain;
            margin-right: 10px;
        }
        #yk-portal-v2 .yk-legacy-tool .navbar .brand-text { color: #fff !important; font-size: 1.35rem; font-weight: 800; }
        #yk-portal-v2 .yk-legacy-tool .navbar .nav-item { position: relative; margin: 0 4px; }
        #yk-portal-v2 .yk-legacy-tool .navbar .nav-link {
            color: rgba(255, 255, 255, 0.88) !important;
            font-size: 0.9rem;
            font-weight: 700;
            padding: 10px 8px !important;
        }
        #yk-portal-v2 .yk-legacy-tool .navbar .nav-item.active .nav-link,#yk-portal-v2 .yk-legacy-tool 
        .navbar .nav-link:hover { color: #fff !important; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler { border: 0; padding: 7px; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler:focus { outline: 3px solid rgba(255, 255, 255, 0.25); }

        #yk-portal-v2 .yk-legacy-tool .hero,#yk-portal-v2 .yk-legacy-tool 
        .product-hero {
            height: auto !important;
            min-height: auto !important;
        }
        #yk-portal-v2 .yk-legacy-tool .product-hero {
            position: relative;
            isolation: isolate;
            min-height: 590px !important;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: #26343d;
            padding: 126px 0 64px;
        }
        #yk-portal-v2 .yk-legacy-tool .hero-media {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: 72% top;
            z-index: -2;
        }
        #yk-portal-v2 .yk-legacy-tool .product-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(90deg, rgba(15, 23, 29, 0.98) 0%, rgba(15, 23, 29, 0.94) 43%, rgba(15, 23, 29, 0.45) 68%, rgba(15, 23, 29, 0.16) 100%);
        }
        #yk-portal-v2 .yk-legacy-tool .hero-copy { max-width: 650px; color: #fff; }
        #yk-portal-v2 .yk-legacy-tool .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            margin-bottom: 20px;
            color: #ffe4a7;
            font-size: 0.92rem;
            font-weight: 700;
        }
        #yk-portal-v2 .yk-legacy-tool .hero-eyebrow i { color: #f5b23f; }
        #yk-portal-v2 .yk-legacy-tool .product-hero h1 {
            color: #fff;
            font-size: clamp(2.35rem, 4vw, 3.5rem);
            line-height: 1.12;
            font-weight: 800;
            margin: 0 0 20px;
            max-width: 640px;
        }
        #yk-portal-v2 .yk-legacy-tool .product-hero h1 span { display: block; }
        #yk-portal-v2 .yk-legacy-tool .product-hero .hero-subtitle {
            max-width: 610px;
            color: rgba(255, 255, 255, 0.88);
            font-size: 1.12rem;
            line-height: 1.8;
            margin: 0 0 26px;
        }
        #yk-portal-v2 .yk-legacy-tool .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
        #yk-portal-v2 .yk-legacy-tool .action-btn {
            min-height: 48px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px 22px;
            border-radius: 8px;
            font-weight: 700;
            transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
        }
        #yk-portal-v2 .yk-legacy-tool .action-btn:hover { transform: translateY(-2px); text-decoration: none; }
        #yk-portal-v2 .yk-legacy-tool .action-primary { background: var(--coral); color: #fff; border: 1px solid var(--coral); }
        #yk-portal-v2 .yk-legacy-tool .action-primary:hover { background: var(--coral-dark); border-color: var(--coral-dark); color: #fff; }
        #yk-portal-v2 .yk-legacy-tool .action-secondary { background: rgba(255, 255, 255, 0.08); color: #fff; border: 1px solid rgba(255, 255, 255, 0.55); }
        #yk-portal-v2 .yk-legacy-tool .action-secondary:hover { background: rgba(255, 255, 255, 0.16); color: #fff; border-color: #fff; }
        #yk-portal-v2 .yk-legacy-tool .hero-facts {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
            margin-top: 26px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 0.92rem;
        }
        #yk-portal-v2 .yk-legacy-tool .hero-facts span { display: inline-flex; align-items: center; gap: 7px; }
        #yk-portal-v2 .yk-legacy-tool .hero-facts i { color: #62d7a1; }

        #yk-portal-v2 .yk-legacy-tool .page-section { padding: 82px 0; }
        #yk-portal-v2 .yk-legacy-tool .section-tint { background: var(--mist); }
        #yk-portal-v2 .yk-legacy-tool .section-dark { background: #202a30; color: #fff; }
        #yk-portal-v2 .yk-legacy-tool .section-head { max-width: 760px; margin: 0 auto 42px; text-align: center; }
        #yk-portal-v2 .yk-legacy-tool .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--coral-dark);
            font-weight: 800;
            font-size: 0.86rem;
            margin-bottom: 12px;
        }
        #yk-portal-v2 .yk-legacy-tool .section-head h2,#yk-portal-v2 .yk-legacy-tool 
        .split-copy h2 {
            color: var(--ink);
            font-size: clamp(1.85rem, 3vw, 2.6rem);
            line-height: 1.25;
            font-weight: 800;
            margin: 0 0 14px;
        }
        #yk-portal-v2 .yk-legacy-tool .section-head p,#yk-portal-v2 .yk-legacy-tool 
        .split-copy > p { color: var(--ink-soft); font-size: 1.03rem; line-height: 1.85; margin: 0; }
        #yk-portal-v2 .yk-legacy-tool .section-dark .section-head h2,#yk-portal-v2 .yk-legacy-tool 
        .section-dark .section-head p { color: #fff; }
        #yk-portal-v2 .yk-legacy-tool .section-dark .section-head p { opacity: 0.78; }
        #yk-portal-v2 .yk-legacy-tool .section-dark .section-kicker { color: #ffd076; }

        #yk-portal-v2 .yk-legacy-tool .pain-layout {
            display: grid;
            grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
            gap: 64px;
            align-items: center;
        }
        #yk-portal-v2 .yk-legacy-tool .pain-lead {
            border-left: 5px solid var(--coral);
            padding: 8px 0 8px 24px;
        }
        #yk-portal-v2 .yk-legacy-tool .pain-lead h2 { font-size: clamp(1.9rem, 3vw, 2.7rem); line-height: 1.3; font-weight: 800; margin: 0 0 18px; }
        #yk-portal-v2 .yk-legacy-tool .pain-lead p { color: var(--ink-soft); line-height: 1.9; margin: 0; }
        #yk-portal-v2 .yk-legacy-tool .pain-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
        #yk-portal-v2 .yk-legacy-tool .pain-row {
            display: grid;
            grid-template-columns: 48px minmax(0, 1fr);
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid var(--line);
        }
        #yk-portal-v2 .yk-legacy-tool .pain-row i {
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: #fff0ed;
            color: var(--coral-dark);
        }
        #yk-portal-v2 .yk-legacy-tool .pain-row h3 { font-size: 1.05rem; font-weight: 800; margin: 1px 0 5px; }
        #yk-portal-v2 .yk-legacy-tool .pain-row p { color: var(--ink-soft); line-height: 1.65; margin: 0; font-size: 0.94rem; }

        #yk-portal-v2 .yk-legacy-tool .feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
        #yk-portal-v2 .yk-legacy-tool .feature-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 8px;
            padding: 26px;
            box-shadow: 0 8px 24px rgba(24, 33, 40, 0.06);
        }
        #yk-portal-v2 .yk-legacy-tool .feature-card:nth-child(2) .feature-icon,#yk-portal-v2 .yk-legacy-tool 
        .feature-card:nth-child(5) .feature-icon { background: #e7f5f3; color: var(--teal); }
        #yk-portal-v2 .yk-legacy-tool .feature-card:nth-child(3) .feature-icon,#yk-portal-v2 .yk-legacy-tool 
        .feature-card:nth-child(6) .feature-icon { background: #fff4dc; color: var(--amber); }
        #yk-portal-v2 .yk-legacy-tool .feature-icon {
            width: 48px;
            height: 48px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: #fff0ed;
            color: var(--coral-dark);
            font-size: 1.2rem;
            margin-bottom: 18px;
        }
        #yk-portal-v2 .yk-legacy-tool .feature-card h3 { font-size: 1.08rem; line-height: 1.4; font-weight: 800; margin: 0 0 9px; }
        #yk-portal-v2 .yk-legacy-tool .feature-card p { color: var(--ink-soft); line-height: 1.75; margin: 0; font-size: 0.94rem; }

        #yk-portal-v2 .yk-legacy-tool .screenshot-shell {
            margin: 0;
            background: #172127;
            border: 1px solid #2b3941;
            border-radius: 8px;
            padding: 10px;
            box-shadow: var(--shadow);
        }
        #yk-portal-v2 .yk-legacy-tool .screenshot-shell img { width: 100%; height: auto; display: block; border-radius: 4px; }
        #yk-portal-v2 .yk-legacy-tool .screenshot-shell figcaption {
            color: rgba(255, 255, 255, 0.72);
            font-size: 0.9rem;
            line-height: 1.6;
            padding: 12px 8px 2px;
            text-align: center;
        }
        #yk-portal-v2 .yk-legacy-tool .capability-strip {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 1px;
            margin-top: 24px;
            background: var(--line);
            border: 1px solid var(--line);
            border-radius: 8px;
            overflow: hidden;
        }
        #yk-portal-v2 .yk-legacy-tool .capability-item { background: #fff; padding: 18px; text-align: center; }
        #yk-portal-v2 .yk-legacy-tool .capability-item strong { display: block; color: var(--ink); margin-bottom: 4px; }
        #yk-portal-v2 .yk-legacy-tool .capability-item span { color: var(--ink-soft); font-size: 0.88rem; }

        #yk-portal-v2 .yk-legacy-tool .scenario-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
        #yk-portal-v2 .yk-legacy-tool .scenario-card {
            min-height: 230px;
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-top: 4px solid #ef6655;
            border-radius: 8px;
            padding: 25px;
            background: rgba(255, 255, 255, 0.045);
        }
        #yk-portal-v2 .yk-legacy-tool .scenario-card:nth-child(2) { border-top-color: #32a99d; }
        #yk-portal-v2 .yk-legacy-tool .scenario-card:nth-child(3) { border-top-color: #e3a53c; }
        #yk-portal-v2 .yk-legacy-tool .scenario-card:nth-child(4) { border-top-color: #54a86f; }
        #yk-portal-v2 .yk-legacy-tool .scenario-card i { font-size: 1.4rem; color: #fff; margin-bottom: 18px; }
        #yk-portal-v2 .yk-legacy-tool .scenario-card h3 { color: #fff; font-size: 1.08rem; font-weight: 800; margin: 0 0 10px; }
        #yk-portal-v2 .yk-legacy-tool .scenario-card p { color: rgba(255, 255, 255, 0.72); font-size: 0.93rem; line-height: 1.75; margin: 0; }

        #yk-portal-v2 .yk-legacy-tool .steps { max-width: 920px; margin: 0 auto; counter-reset: guide; }
        #yk-portal-v2 .yk-legacy-tool .guide-step {
            counter-increment: guide;
            display: grid;
            grid-template-columns: 58px minmax(0, 1fr);
            gap: 20px;
            padding: 0 0 28px;
            position: relative;
        }
        #yk-portal-v2 .yk-legacy-tool .guide-step:not(:last-child)::before {
            content: "";
            position: absolute;
            left: 27px;
            top: 56px;
            bottom: 4px;
            width: 2px;
            background: var(--line);
        }
        #yk-portal-v2 .yk-legacy-tool .guide-step::after {
            content: counter(guide, decimal-leading-zero);
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: var(--ink);
            color: #fff;
            font-weight: 800;
            grid-column: 1;
            grid-row: 1;
        }
        #yk-portal-v2 .yk-legacy-tool .guide-copy {
            grid-column: 2;
            grid-row: 1;
            padding: 5px 0 4px;
        }
        #yk-portal-v2 .yk-legacy-tool .guide-copy h3 { font-size: 1.08rem; font-weight: 800; margin: 0 0 8px; }
        #yk-portal-v2 .yk-legacy-tool .guide-copy p { color: var(--ink-soft); line-height: 1.75; margin: 0; }
        #yk-portal-v2 .yk-legacy-tool .guide-tip {
            display: inline-flex;
            align-items: flex-start;
            gap: 8px;
            margin-top: 10px;
            color: var(--teal);
            font-size: 0.9rem;
            font-weight: 700;
        }

        #yk-portal-v2 .yk-legacy-tool .faq-list { max-width: 900px; margin: 0 auto; border-top: 1px solid var(--line); }
        #yk-portal-v2 .yk-legacy-tool .faq-item { border-bottom: 1px solid var(--line); }
        #yk-portal-v2 .yk-legacy-tool .faq-item summary {
            position: relative;
            list-style: none;
            cursor: pointer;
            padding: 22px 48px 22px 0;
            font-size: 1.02rem;
            font-weight: 800;
            line-height: 1.55;
        }
        #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: "+";
            position: absolute;
            right: 8px;
            top: 18px;
            color: var(--teal);
            font-size: 1.65rem;
            font-weight: 400;
        }
        #yk-portal-v2 .yk-legacy-tool .faq-item[open] summary::after { content: "−"; }
        #yk-portal-v2 .yk-legacy-tool .faq-answer { color: var(--ink-soft); line-height: 1.8; padding: 0 48px 22px 0; }

        #yk-portal-v2 .yk-legacy-tool .download-section {
            position: relative;
            overflow: hidden;
            background: #087f75;
            color: #fff;
            padding: 76px 0;
            text-align: center;
        }
        #yk-portal-v2 .yk-legacy-tool .download-section h2 { color: #fff; font-size: clamp(1.9rem, 3vw, 2.65rem); font-weight: 800; margin: 0 0 14px; }
        #yk-portal-v2 .yk-legacy-tool .download-section .download-lead { max-width: 720px; margin: 0 auto 28px; color: rgba(255, 255, 255, 0.88); line-height: 1.8; }
        #yk-portal-v2 .yk-legacy-tool .download-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }
        #yk-portal-v2 .yk-legacy-tool .download-primary { background: #fff; color: #075d57; border-color: #fff; }
        #yk-portal-v2 .yk-legacy-tool .download-primary:hover { color: #075d57; background: #f2fbfa; border-color: #f2fbfa; }
        #yk-portal-v2 .yk-legacy-tool .download-backup { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, 0.7); }
        #yk-portal-v2 .yk-legacy-tool .download-backup:hover { background: rgba(255, 255, 255, 0.1); color: #fff; border-color: #fff; }
        #yk-portal-v2 .yk-legacy-tool .download-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 24px; margin-top: 24px; font-size: 0.92rem; }
        #yk-portal-v2 .yk-legacy-tool .download-meta span { display: inline-flex; align-items: center; gap: 7px; }
        #yk-portal-v2 .yk-legacy-tool .download-meta i { color: #c7ffdd; }
        #yk-portal-v2 .yk-legacy-tool .download-note { margin: 18px auto 0; color: rgba(255, 255, 255, 0.72); font-size: 0.86rem; }

        @media (max-width: 991.98px) {
            #yk-portal-v2 .yk-legacy-tool .navbar-collapse {
                margin-top: 10px;
                padding: 14px;
                border-radius: 8px;
                background: rgba(22, 33, 42, 0.99);
                box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
            }
            #yk-portal-v2 .yk-legacy-tool .navbar .nav-link { padding: 9px 6px !important; }
            #yk-portal-v2 .yk-legacy-tool .product-hero { min-height: 560px !important; padding-top: 116px; }
            #yk-portal-v2 .yk-legacy-tool .product-hero::before { background: rgba(15, 23, 29, 0.84); }
            #yk-portal-v2 .yk-legacy-tool .hero-media { object-position: center top; }
            #yk-portal-v2 .yk-legacy-tool .pain-layout { grid-template-columns: 1fr; gap: 36px; }
            #yk-portal-v2 .yk-legacy-tool .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
            #yk-portal-v2 .yk-legacy-tool .scenario-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
            #yk-portal-v2 .yk-legacy-tool .capability-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
        }

        @media (max-width: 767.98px) {
            #yk-portal-v2 .yk-legacy-tool .navbar-brand img { width: 36px; height: 36px; max-width: 36px; }
            #yk-portal-v2 .yk-legacy-tool .navbar .brand-text { font-size: 1.2rem; }
            #yk-portal-v2 .yk-legacy-tool .product-hero { min-height: 530px !important; padding: 104px 0 46px; align-items: flex-end; }
            #yk-portal-v2 .yk-legacy-tool .product-hero h1 { font-size: 2.35rem; }
            #yk-portal-v2 .yk-legacy-tool .product-hero .hero-subtitle { font-size: 1rem; line-height: 1.7; }
            #yk-portal-v2 .yk-legacy-tool .hero-actions { flex-direction: column; align-items: stretch; }
            #yk-portal-v2 .yk-legacy-tool .action-btn { width: 100%; }
            #yk-portal-v2 .yk-legacy-tool .hero-facts { gap: 8px 16px; }
            #yk-portal-v2 .yk-legacy-tool .page-section { padding: 62px 0; }
            #yk-portal-v2 .yk-legacy-tool .feature-grid,#yk-portal-v2 .yk-legacy-tool  .scenario-grid { grid-template-columns: 1fr; }
            #yk-portal-v2 .yk-legacy-tool .scenario-card { min-height: auto; }
            #yk-portal-v2 .yk-legacy-tool .section-head { margin-bottom: 32px; }
            #yk-portal-v2 .yk-legacy-tool .pain-lead { padding-left: 18px; }
            #yk-portal-v2 .yk-legacy-tool .guide-step { grid-template-columns: 48px minmax(0, 1fr); gap: 14px; }
            #yk-portal-v2 .yk-legacy-tool .guide-step::after { width: 46px; height: 46px; }
            #yk-portal-v2 .yk-legacy-tool .guide-step:not(:last-child)::before { left: 22px; top: 48px; }
            #yk-portal-v2 .yk-legacy-tool .faq-item summary { padding-right: 42px; }
            #yk-portal-v2 .yk-legacy-tool .faq-answer { padding-right: 0; }
        }

        @media (max-width: 479.98px) {
            #yk-portal-v2 .yk-legacy-tool .product-hero h1 { font-size: 2rem; }
            #yk-portal-v2 .yk-legacy-tool .hero-eyebrow { font-size: 0.82rem; }
            #yk-portal-v2 .yk-legacy-tool .capability-strip { grid-template-columns: 1fr; }
            #yk-portal-v2 .yk-legacy-tool .feature-card { padding: 22px; }
            #yk-portal-v2 .yk-legacy-tool .footer .footer-mobile-half { flex: 0 0 100%; max-width: 100%; }
            #yk-portal-v2 .yk-legacy-tool .footer .contact-list li { overflow-wrap: anywhere; }
            #yk-portal-v2 .yk-legacy-tool .footer-bottom { padding-bottom: env(safe-area-inset-bottom); }
        }

        @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: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
        }