:root {
    color-scheme: dark;
    --bg-k9r4: #07111f;
    --bg-soft-k9r4: rgba(10, 23, 39, 0.72);
    --panel-k9r4: rgba(9, 23, 39, 0.58);
    --panel-strong-k9r4: rgba(12, 30, 51, 0.86);
    --line-k9r4: rgba(255, 255, 255, 0.14);
    --line-strong-k9r4: rgba(114, 219, 255, 0.28);
    --text-k9r4: #f5f8ff;
    --muted-k9r4: #b6c5de;
    --accent-k9r4: #66e3ff;
    --accent-strong-k9r4: #1fc2ff;
    --accent-warm-k9r4: #ff8c7a;
    --shadow-k9r4: 0 20px 60px rgba(0, 0, 0, 0.28);
    --radius-xl-k9r4: 28px;
    --radius-lg-k9r4: 22px;
    --radius-md-k9r4: 18px;
    --radius-sm-k9r4: 14px;
    --container-k9r4: min(1180px, calc(100% - 32px));
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    font-family: 'Noto Sans SC', sans-serif;
    background:
        radial-gradient(circle at 15% 20%, rgba(72, 119, 255, 0.22), transparent 30%),
        radial-gradient(circle at 85% 15%, rgba(102, 227, 255, 0.16), transparent 28%),
        linear-gradient(180deg, #04101d 0%, #07111f 42%, #0b1830 100%);
    color: var(--text-k9r4);
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 80px 80px;
    opacity: 0.18;
    pointer-events: none;
    mask-image: radial-gradient(circle at center, #000 40%, transparent 90%);
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
summary {
    font: inherit;
}

.site-k9r4 {
    position: relative;
}

.wrap-k9r4 {
    width: var(--container-k9r4);
    margin: 0 auto;
}

.nav-k9r4 {
    position: fixed;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 40;
    width: var(--container-k9r4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 16px 22px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    background: rgba(8, 18, 32, 0.48);
    backdrop-filter: blur(24px) saturate(155%);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.18);
    transition: transform 0.28s ease, background 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.nav-k9r4.nav-scrolled-k9r4 {
    background: rgba(5, 16, 29, 0.76);
    border-color: rgba(102, 227, 255, 0.2);
    box-shadow: 0 26px 70px rgba(0, 0, 0, 0.28);
}

.brand-k9r4 {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.logo-mark-k9r4 {
    width: 52px;
    height: 52px;
    border-radius: 18px;
    object-fit: cover;
    border: 1px solid rgba(255,255,255,0.16);
    box-shadow: 0 10px 26px rgba(0,0,0,0.25);
}

.logo-text-k9r4 {
    display: grid;
    gap: 4px;
}

.logo-name-k9r4 {
    margin: 0;
    font-family: 'Noto Serif SC', serif;
    font-size: 1.12rem;
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: 0.04em;
}

.logo-sub-k9r4 {
    color: rgba(235, 244, 255, 0.7);
    font-size: 0.78rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    font-family: 'Space Grotesk', sans-serif;
}

.nav-links-k9r4 {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.nav-link-k9r4 {
    padding: 10px 14px;
    color: rgba(245, 248, 255, 0.84);
    font-size: 0.94rem;
    border-radius: 999px;
    transition: background 0.22s ease, color 0.22s ease, transform 0.22s ease;
}

.nav-link-k9r4:hover,
.nav-link-k9r4:focus-visible {
    background: rgba(255,255,255,0.08);
    color: #ffffff;
    transform: translateY(-1px);
}

.search-form-k9r4 {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: min(320px, 100%);
    max-width: 340px;
    padding: 8px 10px 8px 16px;
    border-radius: 999px;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.1);
    transition: box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.search-form-k9r4:focus-within {
    background: rgba(255,255,255,0.1);
    border-color: rgba(102, 227, 255, 0.45);
    box-shadow: 0 0 0 5px rgba(31, 194, 255, 0.12);
    transform: translateY(-1px);
}

.search-input-k9r4 {
    flex: 1;
    min-width: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: #ffffff;
}

.search-input-k9r4::placeholder {
    color: rgba(236, 243, 255, 0.62);
}

.search-btn-k9r4 {
    border: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(102, 227, 255, 0.95), rgba(31, 194, 255, 0.85));
    color: #04101d;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 10px 26px rgba(18, 192, 255, 0.28);
}

.main-k9r4 {
    padding-bottom: 96px;
}

.hero-k9r4 {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: flex-end;
    overflow: clip;
}

.hero-media-k9r4 {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(1.08) contrast(1.04) brightness(0.6);
    transform: scale(1.08);
}

.hero-shade-k9r4 {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(3, 9, 18, 0.36) 0%, rgba(4, 11, 20, 0.64) 28%, rgba(4, 11, 20, 0.95) 100%),
        radial-gradient(circle at 70% 32%, rgba(108, 229, 255, 0.22), transparent 30%);
}

.hero-inner-k9r4 {
    position: relative;
    z-index: 1;
    width: var(--container-k9r4);
    margin: 0 auto;
    padding: 160px 0 80px;
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
    gap: 34px;
    align-items: end;
}

.hero-copy-k9r4 {
    max-width: 760px;
}

.eyebrow-k9r4 {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    padding: 10px 16px;
    border-radius: 999px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.1);
    color: rgba(235, 243, 255, 0.88);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.76rem;
}

.hero-title-k9r4 {
    margin: 0;
    font-family: 'Noto Serif SC', serif;
    font-weight: 900;
    font-size: clamp(2.7rem, 7vw, 5.6rem);
    line-height: 1.04;
    letter-spacing: 0.02em;
}

.hero-title-k9r4 span {
    color: #74eaff;
}

.hero-text-k9r4 {
    max-width: 720px;
    margin: 22px 0 0;
    color: var(--muted-k9r4);
    font-size: 1.08rem;
    line-height: 1.9;
}

.hero-actions-k9r4 {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.btn-primary-k9r4,
.btn-secondary-k9r4,
.expert-btn-k9r4,
.cta-link-k9r4 {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 52px;
    padding: 0 24px;
    border-radius: 999px;
    transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease, background 0.24s ease;
}

.btn-primary-k9r4 {
    background: linear-gradient(135deg, #7ef0ff 0%, #32c5ff 100%);
    color: #04101d;
    font-weight: 800;
    box-shadow: 0 16px 40px rgba(31, 194, 255, 0.28);
}

.btn-primary-k9r4:hover,
.btn-secondary-k9r4:hover,
.expert-btn-k9r4:hover,
.cta-link-k9r4:hover {
    transform: translateY(-2px);
}

.btn-secondary-k9r4,
.cta-link-k9r4 {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    color: #ffffff;
}

.hero-panel-k9r4 {
    padding: 28px;
    border-radius: var(--radius-xl-k9r4);
    background: linear-gradient(180deg, rgba(255,255,255,0.13), rgba(255,255,255,0.04));
    border: 1px solid rgba(255,255,255,0.12);
    backdrop-filter: blur(26px);
    box-shadow: var(--shadow-k9r4);
}

.panel-label-k9r4 {
    margin: 0;
    color: rgba(235, 243, 255, 0.74);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-size: 0.8rem;
    font-family: 'Space Grotesk', sans-serif;
}

.panel-title-k9r4 {
    margin: 10px 0 0;
    font-family: 'Noto Serif SC', serif;
    font-size: 1.7rem;
}

.metric-grid-k9r4 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 24px;
}

.metric-card-k9r4 {
    padding: 16px 14px;
    border-radius: var(--radius-md-k9r4);
    background: rgba(7, 19, 32, 0.48);
    border: 1px solid rgba(255,255,255,0.08);
}

.metric-value-k9r4 {
    display: block;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
}

.metric-label-k9r4 {
    display: block;
    margin-top: 8px;
    color: rgba(230, 240, 255, 0.72);
    font-size: 0.82rem;
}

.panel-list-k9r4 {
    display: grid;
    gap: 12px;
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
}

.panel-list-k9r4 li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 14px 16px;
    border-radius: var(--radius-md-k9r4);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
}

.panel-list-k9r4 strong {
    font-weight: 700;
}

.section-k9r4 {
    position: relative;
    padding: 38px 0 0;
}

.section-head-k9r4 {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 20px;
    align-items: end;
    margin-bottom: 28px;
}

.section-kicker-k9r4 {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    color: rgba(126, 240, 255, 0.82);
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-size: 0.78rem;
    font-family: 'Space Grotesk', sans-serif;
}

.section-title-k9r4 {
    margin: 0;
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.1;
}

.section-desc-k9r4 {
    max-width: 740px;
    margin: 12px 0 0;
    color: var(--muted-k9r4);
    line-height: 1.9;
}

.breadcrumb-k9r4 {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding: 18px 22px;
    border-radius: var(--radius-lg-k9r4);
    background: var(--bg-soft-k9r4);
    border: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(22px);
    box-shadow: var(--shadow-k9r4);
    color: rgba(235, 243, 255, 0.84);
}

.breadcrumb-sep-k9r4 {
    opacity: 0.55;
}

.video-grid-k9r4 {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 22px;
}

.video-card-k9r4 {
    grid-column: span 4;
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl-k9r4);
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow-k9r4);
    transform: translateY(24px);
    opacity: 0;
    transition: transform 0.6s ease, opacity 0.6s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.video-card-k9r4.is-visible-k9r4,
.expert-card-k9r4.is-visible-k9r4,
.review-card-k9r4.is-visible-k9r4,
.info-card-k9r4.is-visible-k9r4,
.faq-item-k9r4.is-visible-k9r4 {
    transform: translateY(0);
    opacity: 1;
}

.video-card-k9r4:hover {
    transform: scale(1.05);
    border-color: rgba(102, 227, 255, 0.3);
    box-shadow: 0 24px 68px rgba(0, 0, 0, 0.34);
}

.video-thumb-k9r4 {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.video-poster-k9r4 {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease, filter 0.35s ease;
}

.video-card-k9r4:hover .video-poster-k9r4 {
    transform: scale(1.08);
    filter: brightness(0.72);
}

.video-overlay-k9r4 {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    background: linear-gradient(180deg, rgba(4, 17, 31, 0.04), rgba(4, 17, 31, 0.74));
    opacity: 0;
    transition: opacity 0.32s ease;
}

.video-card-k9r4:hover .video-overlay-k9r4 {
    opacity: 1;
}

.play-badge-k9r4 {
    width: 76px;
    height: 76px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #03111d;
    background: rgba(255,255,255,0.88);
    font-size: 1.45rem;
    box-shadow: 0 18px 42px rgba(0,0,0,0.24);
}

.watch-text-k9r4 {
    padding: 10px 18px;
    border-radius: 999px;
    background: rgba(255,255,255,0.16);
    border: 1px solid rgba(255,255,255,0.2);
    font-weight: 700;
}

.video-body-k9r4 {
    padding: 22px;
}

.meta-row-k9r4 {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 14px;
}

.tag-k9r4,
.stat-k9r4 {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255,255,255,0.06);
    color: rgba(235,243,255,0.78);
    font-size: 0.82rem;
}

.video-title-k9r4 {
    margin: 0;
    font-size: 1.14rem;
    line-height: 1.55;
}

.video-desc-k9r4 {
    margin: 12px 0 0;
    color: var(--muted-k9r4);
    line-height: 1.8;
    font-size: 0.96rem;
}

.expert-grid-k9r4,
.review-grid-k9r4,
.info-grid-k9r4 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.expert-card-k9r4,
.review-card-k9r4,
.info-card-k9r4 {
    padding: 24px;
    border-radius: var(--radius-xl-k9r4);
    background: linear-gradient(180deg, rgba(255,255,255,0.09), rgba(255,255,255,0.04));
    border: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-k9r4);
    transform: translateY(24px);
    opacity: 0;
    transition: transform 0.6s ease, opacity 0.6s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.expert-card-k9r4:hover,
.review-card-k9r4:hover,
.info-card-k9r4:hover {
    border-color: rgba(102, 227, 255, 0.26);
    box-shadow: 0 24px 58px rgba(0, 0, 0, 0.3);
}

.avatar-k9r4 {
    width: 84px;
    height: 84px;
    border-radius: 26px;
    object-fit: cover;
    border: 1px solid rgba(255,255,255,0.14);
}

.expert-role-k9r4,
.review-meta-k9r4,
.info-label-k9r4 {
    margin-top: 12px;
    color: rgba(235,243,255,0.68);
    font-size: 0.88rem;
}

.expert-name-k9r4,
.review-name-k9r4,
.info-title-k9r4 {
    margin: 18px 0 0;
    font-size: 1.2rem;
}

.expert-copy-k9r4,
.review-copy-k9r4,
.info-copy-k9r4 {
    margin: 12px 0 0;
    color: var(--muted-k9r4);
    line-height: 1.82;
}

.expert-btn-k9r4 {
    margin-top: 22px;
    background: linear-gradient(135deg, rgba(126, 240, 255, 0.2), rgba(50, 197, 255, 0.34));
    border: 1px solid rgba(126, 240, 255, 0.26);
    color: #ffffff;
    font-weight: 700;
}

.review-star-k9r4 {
    font-size: 1rem;
    letter-spacing: 0.18em;
    color: #ffd98a;
}

.faq-list-k9r4 {
    display: grid;
    gap: 18px;
}

.faq-item-k9r4 {
    padding: 0 24px;
    border-radius: var(--radius-xl-k9r4);
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-k9r4);
    transform: translateY(24px);
    opacity: 0;
    transition: transform 0.6s ease, opacity 0.6s ease, border-color 0.24s ease;
}

.faq-item-k9r4[open] {
    border-color: rgba(126, 240, 255, 0.28);
}

.faq-summary-k9r4 {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 22px 0;
    font-size: 1.08rem;
    font-weight: 700;
}

.faq-summary-k9r4::-webkit-details-marker {
    display: none;
}

.faq-icon-k9r4 {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255,255,255,0.12);
    transition: transform 0.28s ease, background 0.28s ease;
}

.faq-item-k9r4[open] .faq-icon-k9r4 {
    transform: rotate(45deg);
    background: rgba(126, 240, 255, 0.12);
}

.faq-answer-k9r4 {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.32s ease, opacity 0.32s ease, padding 0.32s ease;
    opacity: 0;
}

.faq-item-k9r4[open] .faq-answer-k9r4 {
    grid-template-rows: 1fr;
    opacity: 1;
    padding-bottom: 22px;
}

.faq-answer-inner-k9r4 {
    overflow: hidden;
    color: var(--muted-k9r4);
    line-height: 1.9;
}

.page-hero-k9r4 {
    position: relative;
    padding: 168px 0 54px;
}

.page-box-k9r4 {
    position: relative;
    overflow: hidden;
    padding: 34px;
    border-radius: 34px;
    border: 1px solid rgba(255,255,255,0.1);
    background: linear-gradient(180deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-k9r4);
}

.page-box-k9r4::before {
    content: '';
    position: absolute;
    inset: auto -10% -30% auto;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(102, 227, 255, 0.2), transparent 65%);
    pointer-events: none;
}

.page-title-k9r4 {
    position: relative;
    margin: 16px 0 0;
    max-width: 760px;
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(2.2rem, 5vw, 4rem);
    line-height: 1.12;
}

.page-copy-k9r4 {
    position: relative;
    margin: 18px 0 0;
    max-width: 760px;
    color: var(--muted-k9r4);
    line-height: 1.9;
}

.content-grid-k9r4 {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
    gap: 24px;
}

.stack-k9r4 {
    display: grid;
    gap: 22px;
}

.content-card-k9r4 {
    padding: 28px;
    border-radius: var(--radius-xl-k9r4);
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow-k9r4);
}

.content-card-k9r4 h3,
.content-card-k9r4 h2 {
    margin: 0 0 14px;
    font-family: 'Noto Serif SC', serif;
}

.content-card-k9r4 p,
.content-card-k9r4 li {
    color: var(--muted-k9r4);
    line-height: 1.9;
}

.content-card-k9r4 ul {
    margin: 0;
    padding-left: 20px;
}

.contact-box-k9r4 {
    display: grid;
    gap: 16px;
}

.contact-item-k9r4 {
    padding: 18px 20px;
    border-radius: var(--radius-md-k9r4);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
}

.contact-key-k9r4 {
    display: block;
    color: rgba(235,243,255,0.68);
    font-size: 0.86rem;
    margin-bottom: 8px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-family: 'Space Grotesk', sans-serif;
}

.contact-value-k9r4 {
    font-size: 1.08rem;
    font-weight: 700;
}

.inline-photo-k9r4 {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--radius-xl-k9r4);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow-k9r4);
}

.footer-k9r4 {
    padding: 34px 0 48px;
}

.footer-box-k9r4 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
    padding: 22px 24px;
    border-radius: 24px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
}

.footer-copy-k9r4 {
    color: rgba(235,243,255,0.68);
    line-height: 1.8;
}

.footer-links-k9r4 {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

.footer-link-k9r4 {
    color: rgba(245,248,255,0.84);
}

.anchor-target-k9r4 {
    scroll-margin-top: 120px;
}

@media (max-width: 1180px) {
    .nav-k9r4 {
        top: 14px;
        border-radius: 32px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero-inner-k9r4,
    .content-grid-k9r4 {
        grid-template-columns: 1fr;
    }

    .hero-panel-k9r4 {
        max-width: 720px;
    }

    .video-card-k9r4 {
        grid-column: span 6;
    }
}

@media (max-width: 820px) {
    .nav-k9r4 {
        width: min(100% - 18px, 720px);
        padding: 14px;
    }

    .brand-k9r4 {
        width: 100%;
        justify-content: center;
    }

    .nav-links-k9r4,
    .search-form-k9r4 {
        width: 100%;
    }

    .hero-inner-k9r4 {
        padding-top: 230px;
    }

    .section-head-k9r4,
    .expert-grid-k9r4,
    .review-grid-k9r4,
    .info-grid-k9r4,
    .metric-grid-k9r4 {
        grid-template-columns: 1fr;
    }

    .video-card-k9r4 {
        grid-column: span 12;
    }

    .page-box-k9r4,
    .content-card-k9r4,
    .expert-card-k9r4,
    .review-card-k9r4,
    .info-card-k9r4,
    .faq-item-k9r4,
    .hero-panel-k9r4 {
        padding-left: 20px;
        padding-right: 20px;
    }

    .footer-box-k9r4 {
        align-items: flex-start;
        flex-direction: column;
    }
}