.yf-knowledge-page {
    --yk-ink: #172033;
    --yk-muted: #657085;
    --yk-line: #e4e8ef;
    --yk-soft: #f6f8fb;
    --yk-orange: #ff642f;
    --yk-orange-2: #ff8b3d;
    width: min(1180px, calc(100% - 28px));
    margin: 28px auto 0;
    color: var(--yk-ink);
}
.yf-knowledge-breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 18px;
    padding: 0;
    list-style: none;
    color: var(--yk-muted);
    font-size: 11px;
    font-weight: 750;
}
.yf-knowledge-breadcrumb li + li::before {
    margin-right: 8px;
    content: "/";
    color: #b4bcc8;
}
.yf-knowledge-breadcrumb a { color: var(--yk-muted); text-decoration: none; }
.yf-knowledge-breadcrumb a:hover { color: var(--yk-orange); }
.yf-knowledge-hero {
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, .55fr);
    gap: 30px;
    padding: clamp(28px, 5vw, 62px);
    color: #fff;
    background:
        radial-gradient(circle at 86% 13%, rgba(255,139,61,.34), transparent 28%),
        radial-gradient(circle at 18% 90%, rgba(255,100,47,.18), transparent 34%),
        linear-gradient(135deg, #111827 0%, #1d2939 56%, #29384e 100%);
    border-radius: 30px;
    box-shadow: 0 28px 70px rgba(15,23,42,.2);
}
.yf-knowledge-hero::after {
    position: absolute;
    right: -90px;
    bottom: -130px;
    width: 330px;
    height: 330px;
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 50%;
    content: "";
}
.yf-knowledge-hero-copy { position: relative; z-index: 1; }
.yf-knowledge-kicker,
.yf-knowledge-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 14px;
    color: var(--yk-orange-2);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase;
}
.yf-knowledge-hero h1 {
    max-width: 760px;
    margin: 0;
    color: #ffffff !important;
    font-size: clamp(30px, 5.2vw, 58px);
    font-weight: 900;
    letter-spacing: -.045em;
    line-height: 1.03;
}
.yf-knowledge-hero-copy > p {
    max-width: 720px;
    margin: 21px 0 0;
    color: rgba(255,255,255,.76);
    font-size: 14px;
    line-height: 1.85;
}
.yf-knowledge-hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 27px; }
.yf-knowledge-hero-actions .btn {
    min-height: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 13px;
    font-size: 11px;
    font-weight: 850;
}
.yf-knowledge-summary {
    position: relative;
    z-index: 1;
    align-self: center;
    padding: 21px;
    background: rgba(255,255,255,.09);
    border: 1px solid rgba(255,255,255,.16);
    border-radius: 22px;
    backdrop-filter: blur(14px);
}
.yf-knowledge-summary > strong {
    display: block;
    margin-bottom: 12px;
    color: #fff;
    font-size: 12px;
    font-weight: 900;
}
.yf-knowledge-summary dl { margin: 0; }
.yf-knowledge-summary dl > div {
    display: grid;
    grid-template-columns: 90px minmax(0,1fr);
    gap: 12px;
    padding: 11px 0;
    border-top: 1px solid rgba(255,255,255,.12);
}
.yf-knowledge-summary dt { color: rgba(255,255,255,.54); font-size: 9px; font-weight: 800; }
.yf-knowledge-summary dd { margin: 0; color: #fff; font-size: 10px; font-weight: 800; line-height: 1.45; }
.yf-knowledge-answer {
    display: grid;
    grid-template-columns: 260px minmax(0,1fr);
    gap: 26px;
    margin: 25px 0;
    padding: 25px 27px;
    background: #fff7f2;
    border: 1px solid #ffd9c9;
    border-radius: 22px;
}
.yf-knowledge-answer span { color: var(--yk-orange); font-size: 9px; font-weight: 900; letter-spacing: .09em; text-transform: uppercase; }
.yf-knowledge-answer h2 { margin: 7px 0 0; font-size: 23px; font-weight: 900; letter-spacing: -.025em; }
.yf-knowledge-answer p { margin: 0; color: #4f5b6d; font-size: 12px; line-height: 1.85; }
.yf-knowledge-answer strong { color: var(--yk-ink); }
.yf-knowledge-index {
    margin: 0 0 24px;
    padding: 18px 20px;
    background: var(--yk-soft);
    border: 1px solid var(--yk-line);
    border-radius: 18px;
}
.yf-knowledge-index > strong { display: block; margin-bottom: 10px; font-size: 11px; font-weight: 900; }
.yf-knowledge-index > div { display: flex; flex-wrap: wrap; gap: 8px; }
.yf-knowledge-index a {
    padding: 8px 11px;
    color: #465269;
    background: #fff;
    border: 1px solid #dde2e9;
    border-radius: 999px;
    font-size: 9px;
    font-weight: 800;
    text-decoration: none;
}
.yf-knowledge-index a:hover { color: var(--yk-orange); border-color: #ffc7af; }
.yf-knowledge-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 18px;
}
.yf-knowledge-card {
    scroll-margin-top: 92px;
    padding: 24px;
    background: #fff;
    border: 1px solid var(--yk-line);
    border-radius: 23px;
    box-shadow: 0 12px 38px rgba(15,23,42,.055);
}
.yf-knowledge-card header { display: flex; align-items: center; gap: 13px; }
.yf-knowledge-card-icon,
.yf-knowledge-section-head > span {
    width: 45px;
    height: 45px;
    flex: 0 0 45px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: linear-gradient(135deg, var(--yk-orange), var(--yk-orange-2));
    border-radius: 14px;
    box-shadow: 0 12px 26px rgba(255,100,47,.22);
    font-size: 17px;
}
.yf-knowledge-card small { display: block; color: #929cac; font-size: 8px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.yf-knowledge-card h2 { margin: 3px 0 0; font-size: 19px; font-weight: 900; letter-spacing: -.02em; }
.yf-knowledge-card-summary { margin: 18px 0 15px; color: #5e697c; font-size: 11px; line-height: 1.75; }
.yf-knowledge-card ul { display: grid; gap: 9px; margin: 0; padding: 0; list-style: none; }
.yf-knowledge-card li {
    position: relative;
    padding-left: 20px;
    color: #3f4a5c;
    font-size: 10px;
    line-height: 1.65;
}
.yf-knowledge-card li::before {
    position: absolute;
    top: .55em;
    left: 2px;
    width: 7px;
    height: 7px;
    background: #ff8b3d;
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(255,139,61,.12);
    content: "";
}
.yf-knowledge-card footer { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 18px; padding-top: 16px; border-top: 1px solid #edf0f4; }
.yf-knowledge-card footer a { color: #29384e; font-size: 9px; font-weight: 850; text-decoration: none; }
.yf-knowledge-card footer a:hover { color: var(--yk-orange); }
.yf-knowledge-channels,
.yf-knowledge-source,
.yf-knowledge-faq {
    margin-top: 24px;
    padding: clamp(24px, 4vw, 38px);
    background: #fff;
    border: 1px solid var(--yk-line);
    border-radius: 26px;
    box-shadow: 0 14px 42px rgba(15,23,42,.05);
}
.yf-knowledge-section-head { display: flex; align-items: center; gap: 15px; }
.yf-knowledge-section-head p { margin: 0; color: var(--yk-orange); font-size: 9px; font-weight: 900; letter-spacing: .09em; text-transform: uppercase; }
.yf-knowledge-section-head h2,
.yf-knowledge-source > div:first-child h2 {
    margin: 4px 0 0;
    font-size: clamp(22px, 3vw, 31px);
    font-weight: 900;
    letter-spacing: -.03em;
}
.yf-knowledge-section-lead { max-width: 820px; margin: 18px 0 0; color: var(--yk-muted); font-size: 11px; line-height: 1.8; }
.yf-knowledge-channel-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; margin-top: 22px; }
.yf-knowledge-channel-card {
    display: grid;
    grid-template-columns: 43px minmax(0,1fr) auto;
    gap: 12px;
    align-items: center;
    padding: 15px;
    color: var(--yk-ink);
    background: var(--yk-soft);
    border: 1px solid #e6eaf0;
    border-radius: 17px;
    text-decoration: none;
}
.yf-knowledge-channel-card:hover { color: var(--yk-ink); background: #fff8f4; border-color: #ffc7af; transform: translateY(-1px); }
.yf-knowledge-channel-icon { width: 43px; height: 43px; display: inline-flex; align-items: center; justify-content: center; color: var(--yk-orange); background: #fff; border-radius: 12px; font-size: 17px; }
.yf-knowledge-channel-card small,
.yf-knowledge-channel-card strong,
.yf-knowledge-channel-card em { display: block; }
.yf-knowledge-channel-card small { color: #8b95a5; font-size: 8px; font-weight: 850; text-transform: uppercase; }
.yf-knowledge-channel-card strong { margin-top: 2px; font-size: 11px; font-weight: 900; }
.yf-knowledge-channel-card em { margin-top: 3px; color: var(--yk-muted); font-size: 8px; font-style: normal; }
.yf-knowledge-source > div:first-child { margin-bottom: 20px; }
.yf-knowledge-source-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 13px; }
.yf-knowledge-source-grid article { padding: 18px; background: var(--yk-soft); border-radius: 17px; }
.yf-knowledge-source-grid article > i { color: var(--yk-orange); font-size: 20px; }
.yf-knowledge-source-grid h3 { margin: 12px 0 8px; font-size: 12px; font-weight: 900; line-height: 1.35; }
.yf-knowledge-source-grid p { margin: 0; color: var(--yk-muted); font-size: 9px; line-height: 1.7; }
.yf-knowledge-source-grid a { display: inline-block; margin-top: 12px; color: #29384e; font-size: 8px; font-weight: 900; text-decoration: none; }
.yf-knowledge-source-grid a:hover { color: var(--yk-orange); }
.yf-knowledge-faq-list { display: grid; gap: 10px; margin-top: 22px; }
.yf-knowledge-faq details { padding: 16px 18px; background: var(--yk-soft); border: 1px solid #e7ebf0; border-radius: 15px; }
.yf-knowledge-faq summary { cursor: pointer; font-size: 11px; font-weight: 900; }
.yf-knowledge-faq details p { margin: 12px 0 0; color: var(--yk-muted); font-size: 10px; line-height: 1.75; }
.yf-knowledge-footer-note {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin: 24px 0 0;
    padding: 18px 20px;
    color: #fff;
    background: #172033;
    border-radius: 18px;
}
.yf-knowledge-footer-note > div { display: flex; align-items: flex-start; gap: 11px; }
.yf-knowledge-footer-note i { color: var(--yk-orange-2); }
.yf-knowledge-footer-note p { margin: 0; color: rgba(255,255,255,.7); font-size: 9px; line-height: 1.65; }
.yf-knowledge-footer-note strong { color: #fff; }
.yf-knowledge-footer-note a { flex: 0 0 auto; color: #fff; font-size: 9px; font-weight: 850; text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 991px) {
    .yf-knowledge-hero { grid-template-columns: 1fr; }
    .yf-knowledge-summary { max-width: 560px; }
    .yf-knowledge-source-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 767px) {
    .yf-knowledge-page { width: min(100% - 20px, 1180px); margin-top: 18px; }
    .yf-knowledge-hero { padding: 27px 21px; border-radius: 24px; }
    .yf-knowledge-hero h1 { font-size: 31px; }
    .yf-knowledge-answer { grid-template-columns: 1fr; gap: 13px; padding: 21px; }
    .yf-knowledge-grid,
    .yf-knowledge-channel-grid { grid-template-columns: 1fr; }
    .yf-knowledge-card,
    .yf-knowledge-channels,
    .yf-knowledge-source,
    .yf-knowledge-faq { border-radius: 20px; }
    .yf-knowledge-source-grid { grid-template-columns: 1fr; }
    .yf-knowledge-footer-note { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 440px) {
    .yf-knowledge-hero-actions { display: grid; }
    .yf-knowledge-hero-actions .btn { width: 100%; }
    .yf-knowledge-summary dl > div { grid-template-columns: 82px minmax(0,1fr); }
    .yf-knowledge-card { padding: 20px; }
    .yf-knowledge-section-head { align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
    .yf-knowledge-page * { scroll-behavior: auto !important; transition: none !important; }
}