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

        #yk-portal-v2 .yk-legacy-tool {
            --ink: #102a43;
            --body: #3f5368;
            --muted: #6d7f91;
            --navy: #0b2137;
            --blue: #1261a0;
            --teal: #0f766e;
            --mint: #d9f5ed;
            --amber: #d97706;
            --line: #dce6ef;
            --panel: #f5f9fc;
            --shadow: 0 16px 42px rgba(16, 42, 67, .10);
        }

        #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 {
            padding-top: 60px;
            margin: 0;
            color: var(--body);
            background: #fff;
            font-family: "Nunito", "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
        }

        /* Keep the shared navigation markup while giving this page a denser product-page treatment. */
        #yk-portal-v2 .yk-legacy-tool .navbar { background: rgba(11, 33, 55, .94); padding: 12px 0; transition: all .25s ease; }
        #yk-portal-v2 .yk-legacy-tool .navbar-scrolled { padding: 8px 0; background: rgba(11, 33, 55, .98); box-shadow: 0 6px 24px rgba(0,0,0,.18); }
        #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; }
        #yk-portal-v2 .yk-legacy-tool .brand-text { color: #fff !important; font-weight: 800; letter-spacing: .02em; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-nav .nav-link { color: rgba(255,255,255,.82); font-weight: 700; padding: .5rem .65rem; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-nav .nav-link:hover,#yk-portal-v2 .yk-legacy-tool  .navbar-dark .navbar-nav .nav-item.active .nav-link { color: #fff; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler { border: 0; outline: 0; }
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon { background-image: none; position: relative; width: 24px; height: 17px; }
        #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 { content: ""; width: 100%; height: 2px; background: #fff; border-radius: 3px; position: absolute; left: 0; }
        #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; }

        /* style.css uses a full-screen hero for the home page; this product page must size to its content. */
        #yk-portal-v2 .yk-legacy-tool .hero { height: auto !important; min-height: auto !important; padding: 88px 0 76px; background: #0b2137; position: relative; overflow: hidden; }
        #yk-portal-v2 .yk-legacy-tool .hero .container { position: relative; z-index: 1; }
        #yk-portal-v2 .yk-legacy-tool .hero-tag { display: inline-flex; align-items: center; gap: 8px; padding: 6px 13px; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; color: #d9f5ed; background: rgba(255,255,255,.08); font-size: .84rem; font-weight: 800; }
        #yk-portal-v2 .yk-legacy-tool .hero h1 { color: #fff; font-size: clamp(2rem, 4vw, 3.25rem); line-height: 1.2; margin: 18px 0 16px; font-weight: 900; }
        #yk-portal-v2 .yk-legacy-tool .hero .subtitle { max-width: 850px; color: rgba(255,255,255,.88); font-size: 1.12rem; margin: 0; }
        #yk-portal-v2 .yk-legacy-tool .badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 25px; }
        #yk-portal-v2 .yk-legacy-tool .badge-item { color: #fff; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.17); border-radius: 7px; padding: 6px 12px; font-size: .88rem; font-weight: 700; }
        #yk-portal-v2 .yk-legacy-tool .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
        #yk-portal-v2 .yk-legacy-tool .btn-main,#yk-portal-v2 .yk-legacy-tool  .btn-ghost { display: inline-flex; align-items: center; gap: 9px; border-radius: 7px; padding: 11px 20px; font-weight: 800; text-decoration: none !important; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
        #yk-portal-v2 .yk-legacy-tool .btn-main { color: #fff; background: var(--amber); box-shadow: 0 9px 22px rgba(217,119,6,.28); }
        #yk-portal-v2 .yk-legacy-tool .btn-main:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 12px 25px rgba(217,119,6,.38); }
        #yk-portal-v2 .yk-legacy-tool .btn-ghost { color: #fff; border: 1px solid rgba(255,255,255,.4); background: rgba(255,255,255,.07); }
        #yk-portal-v2 .yk-legacy-tool .btn-ghost:hover { color: #fff; background: rgba(255,255,255,.15); }

        #yk-portal-v2 .yk-legacy-tool .section { padding: 82px 0; }
        #yk-portal-v2 .yk-legacy-tool .section-alt { background: var(--panel); }
        #yk-portal-v2 .yk-legacy-tool .section-title { max-width: 760px; margin: 0 auto 44px; text-align: center; }
        #yk-portal-v2 .yk-legacy-tool .section-title .eyebrow { display: block; color: var(--teal); text-transform: uppercase; letter-spacing: .11em; font-size: .77rem; font-weight: 900; }
        #yk-portal-v2 .yk-legacy-tool .section-title h2 { color: var(--ink); font-size: clamp(1.65rem, 3vw, 2.35rem); line-height: 1.3; margin: 8px 0 13px; font-weight: 900; }
        #yk-portal-v2 .yk-legacy-tool .section-title p { color: var(--muted); margin: 0; }

        #yk-portal-v2 .yk-legacy-tool .pain-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; align-items: stretch; }
        #yk-portal-v2 .yk-legacy-tool .pain-copy { padding: 34px; border: 1px solid var(--line); border-left: 5px solid var(--amber); border-radius: 9px; background: #fff; box-shadow: var(--shadow); }
        #yk-portal-v2 .yk-legacy-tool .pain-copy h3 { color: var(--ink); font-size: 1.35rem; margin: 0 0 14px; font-weight: 900; }
        #yk-portal-v2 .yk-legacy-tool .pain-copy p { margin: 0 0 12px; }
        #yk-portal-v2 .yk-legacy-tool .pain-list { display: grid; gap: 13px; align-content: center; }
        #yk-portal-v2 .yk-legacy-tool .pain-item { display: flex; gap: 13px; align-items: flex-start; padding: 17px 18px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
        #yk-portal-v2 .yk-legacy-tool .pain-item i { color: var(--amber); font-size: 1.15rem; margin-top: 5px; }
        #yk-portal-v2 .yk-legacy-tool .pain-item strong { display: block; color: var(--ink); margin-bottom: 2px; }

        #yk-portal-v2 .yk-legacy-tool .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        #yk-portal-v2 .yk-legacy-tool .feature-card { height: 100%; padding: 25px 22px; border: 1px solid var(--line); border-radius: 9px; background: #fff; box-shadow: 0 8px 25px rgba(16,42,67,.06); transition: transform .2s ease, box-shadow .2s ease; }
        #yk-portal-v2 .yk-legacy-tool .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
        #yk-portal-v2 .yk-legacy-tool .feature-icon { width: 42px; height: 42px; display: inline-flex; align-items: center; justify-content: center; color: var(--teal); background: var(--mint); border-radius: 8px; font-size: 1.1rem; }
        #yk-portal-v2 .yk-legacy-tool .feature-card h3 { color: var(--ink); font-size: 1.1rem; margin: 16px 0 7px; font-weight: 900; }
        #yk-portal-v2 .yk-legacy-tool .feature-card p { color: var(--body); margin: 0; font-size: .94rem; }
        #yk-portal-v2 .yk-legacy-tool .feature-proof { display: grid; grid-template-columns: .95fr 1.05fr; gap: 36px; align-items: center; margin-top: 44px; padding: 25px; border-radius: 10px; background: #eaf6f7; }
        #yk-portal-v2 .yk-legacy-tool .feature-proof h3 { color: var(--ink); font-size: 1.5rem; margin: 0 0 9px; font-weight: 900; }
        #yk-portal-v2 .yk-legacy-tool .feature-proof p { margin: 0; }
        #yk-portal-v2 .yk-legacy-tool .screenshot-frame { padding: 10px; border: 1px solid #c8dbe2; border-radius: 8px; background: #fff; box-shadow: 0 12px 30px rgba(16,42,67,.12); }
        #yk-portal-v2 .yk-legacy-tool .screenshot-frame img { display: block; width: 100%; height: auto; border-radius: 4px; }
        #yk-portal-v2 .yk-legacy-tool .screenshot-caption { color: var(--muted); font-size: .82rem; text-align: center; margin: 8px 0 0; }

        #yk-portal-v2 .yk-legacy-tool .scenario-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
        #yk-portal-v2 .yk-legacy-tool .scenario-card { padding: 22px 19px; border-top: 3px solid var(--blue); border-radius: 7px; background: #fff; box-shadow: 0 7px 22px rgba(16,42,67,.07); }
        #yk-portal-v2 .yk-legacy-tool .scenario-card i { color: var(--blue); font-size: 1.2rem; }
        #yk-portal-v2 .yk-legacy-tool .scenario-card h3 { color: var(--ink); font-size: 1.02rem; margin: 12px 0 7px; font-weight: 900; }
        #yk-portal-v2 .yk-legacy-tool .scenario-card p { margin: 0; font-size: .9rem; }

        #yk-portal-v2 .yk-legacy-tool .steps { max-width: 930px; margin: 0 auto; display: grid; gap: 14px; }
        #yk-portal-v2 .yk-legacy-tool .step { display: grid; grid-template-columns: 58px 1fr; gap: 17px; align-items: start; padding: 20px 22px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
        #yk-portal-v2 .yk-legacy-tool .step-num { width: 42px; height: 42px; display: flex; align-items: center; justify-content: center; border-radius: 50%; color: #fff; background: var(--teal); font-weight: 900; font-size: 1.1rem; }
        #yk-portal-v2 .yk-legacy-tool .step h3 { color: var(--ink); font-size: 1.05rem; margin: 1px 0 4px; font-weight: 900; }
        #yk-portal-v2 .yk-legacy-tool .step p { margin: 0; font-size: .94rem; }
        #yk-portal-v2 .yk-legacy-tool .note { max-width: 930px; margin: 20px auto 0; padding: 14px 17px; border-left: 4px solid var(--blue); border-radius: 5px; background: #edf6fc; color: var(--body); font-size: .9rem; }

        #yk-portal-v2 .yk-legacy-tool .faq-list { max-width: 900px; margin: 0 auto; display: grid; gap: 10px; }
        #yk-portal-v2 .yk-legacy-tool .faq-list details { border: 1px solid var(--line); border-radius: 7px; background: #fff; overflow: hidden; }
        #yk-portal-v2 .yk-legacy-tool .faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 18px; cursor: pointer; list-style: none; padding: 17px 19px; color: var(--ink); font-weight: 900; }
        #yk-portal-v2 .yk-legacy-tool .faq-list summary::-webkit-details-marker { display: none; }
        #yk-portal-v2 .yk-legacy-tool .faq-list summary:after { content: "+"; color: var(--teal); font-size: 1.3rem; line-height: 1; }
        #yk-portal-v2 .yk-legacy-tool .faq-list details[open] summary:after { content: "−"; }
        #yk-portal-v2 .yk-legacy-tool .faq-list details p { margin: 0; padding: 0 19px 18px; color: var(--body); font-size: .94rem; }

        #yk-portal-v2 .yk-legacy-tool .download-section { padding: 76px 0; color: #fff; text-align: center; background: #1261a0; }
        #yk-portal-v2 .yk-legacy-tool .download-section h2 { margin: 0 0 10px; font-size: clamp(1.6rem, 3vw, 2.25rem); font-weight: 900; }
        #yk-portal-v2 .yk-legacy-tool .download-section p { max-width: 700px; margin: 0 auto 23px; color: rgba(255,255,255,.84); }
        #yk-portal-v2 .yk-legacy-tool .download-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
        #yk-portal-v2 .yk-legacy-tool .download-section .btn-main { border: 0; }
        #yk-portal-v2 .yk-legacy-tool .download-section .btn-ghost { background: rgba(255,255,255,.1); }
        #yk-portal-v2 .yk-legacy-tool .download-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; margin-top: 22px; color: rgba(255,255,255,.8); font-size: .88rem; }
        #yk-portal-v2 .yk-legacy-tool .download-meta span { display: inline-flex; align-items: center; gap: 6px; }
        #yk-portal-v2 .yk-legacy-tool .download-meta i { color: #b7f0de; }

        @media (max-width: 991px) {
            #yk-portal-v2 .yk-legacy-tool .navbar-collapse { margin-top: 10px; padding: 12px; border-radius: 7px; background: rgba(11,33,55,.98); }
            #yk-portal-v2 .yk-legacy-tool .pain-grid,#yk-portal-v2 .yk-legacy-tool  .feature-proof { grid-template-columns: 1fr; }
            #yk-portal-v2 .yk-legacy-tool .scenario-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 767px) {
            #yk-portal-v2 .yk-legacy-tool { padding-top: 56px; }
            #yk-portal-v2 .yk-legacy-tool .hero { padding: 66px 0 55px; }
            #yk-portal-v2 .yk-legacy-tool .hero .subtitle { font-size: 1rem; }
            #yk-portal-v2 .yk-legacy-tool .section { padding: 60px 0; }
            #yk-portal-v2 .yk-legacy-tool .feature-grid { grid-template-columns: 1fr 1fr; }
            #yk-portal-v2 .yk-legacy-tool .pain-copy { padding: 25px; }
        }
        @media (max-width: 520px) {
            #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 .step { grid-template-columns: 45px 1fr; padding: 17px 15px; gap: 12px; }
            #yk-portal-v2 .yk-legacy-tool .step-num { width: 36px; height: 36px; font-size: .95rem; }
            #yk-portal-v2 .yk-legacy-tool .hero-actions,#yk-portal-v2 .yk-legacy-tool  .download-actions { align-items: stretch; flex-direction: column; }
            #yk-portal-v2 .yk-legacy-tool .hero-actions a,#yk-portal-v2 .yk-legacy-tool  .download-actions a { justify-content: center; }
        }