.main-idea-img {
    width: 840px;
    max-width: 90vw;
    height: auto;
    display: block;
    margin: 1.2rem auto 1.5rem auto;
    border-radius: 12px;
    /* border: 1px solid #e5e7eb; */
}

:root {
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.65;
    font-weight: 400;
    color: #1f2937;
    background: #ffffff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #ffffff;
    font-size: 18px;
}

.page {
    padding: 1.6rem 1.6rem 2.8rem;
}

.container {
    max-width: 1560px;
    width: 100%;
    margin: 0 auto;
    display: grid;
    gap: 1.4rem;
}

section,
.hero {
    background: #ffffff;
    border: 1px solid #e6eaf0;
    border-radius: 12px;
    padding: 1.35rem 1.45rem;
}

h1,
h2,
h3 {
    margin: 0 0 0.85rem;
    letter-spacing: -0.01em;
}

h1 {
    line-height: 1.15;
    text-align: center;
    margin-bottom: 1rem;
    font-size: clamp(2rem, 3vw, 3rem);
}

h1 span {
    display: block;
}

.hero {
    text-align: center;
}

.hero p {
    margin: 0;
    color: #334155;
}

.accept-badge {
    display: inline-block;
    margin: 0 0 0.9rem;
    padding: 0.34rem 0.75rem;
    border: 1px solid #cdddf9;
    background: #f3f7ff;
    color: #1e3a8a;
    font-weight: 600;
    font-size: 0.96rem;
    border-radius: 999px;
}

.affiliations {
    font-size: 1rem;
    font-weight: 600;
    color: #475569;
    margin-bottom: 0.25rem;
}

.affiliation-note {
    font-size: 0.95rem;
    color: #64748b;
    margin-bottom: 0.9rem;
}

.authors {
    display: inline-block;
    font-size: 1.15rem;
    line-height: 1.7;
    color: #1f2937;
    text-align: center;
    margin: 0 auto 0 auto;
}

.hero-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-top: 1.15rem;
}

.action-btn {
    text-decoration: none;
    border: 1px solid #cfd8e3;
    border-radius: 8px;
    padding: 0.68rem 1.1rem;
    color: #1e293b;
    font-weight: 600;
    background: #ffffff;
    font-size: 1rem;
}

.btn-icon {
    margin-left: 0.42rem;
    font-size: 0.92em;
    color: #475569;
    vertical-align: baseline;
}

.action-btn:hover {
    background: #f8fafc;
}

.content-block {
    text-align: center;
}

h2 {
    font-size: clamp(1.55rem, 2vw, 2rem);
}

h3 {
    font-size: clamp(1.2rem, 1.5vw, 1.45rem);
    margin-top: 0.4rem;
}

h4 {
    font-size: 1.12rem;
    margin: 1rem 0 0.4rem;
}

.stacked-text p {
    margin: 0 auto 0.9rem;
    max-width: 1080px;
    text-align: center;
    font-size: 1.2rem;
}

.stacked-text p:last-child {
    margin-bottom: 0;
}

.idea-figure {
    margin: 1.2rem auto 0;
}

.idea-figure img {
    width: min(1120px, 96%);
    max-width: 100%;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    display: block;
    margin: 0 auto;
}

.section-intro,
.group-desc {
    max-width: 1160px;
    margin: 0 auto 0.85rem;
    text-align: center;
    font-size: 1.05rem;
}

.result-list {
    margin: 0;
    padding-left: 1.2rem;
    display: grid;
    gap: 0.45rem;
}

.video-group {
    margin-top: 1.15rem;
}

.video-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.95rem;
    margin-top: 0.7rem;
}

.video-card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 0.65rem;
    width: min(320px, 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.video-card.ours {
    background: #f0fdf4;
}

.video-card.baseline {
    background: #fef2f2;
}

.video-card video {
    height: 200px;
    width: 100%;
    object-fit: contain;
    display: block;
    border-radius: 6px;
    background: #000;
}

.video-card p {
    margin: 0.55rem 0 0;
    font-size: 0.98rem;
    line-height: 1.35;
    color: #4b5567;
    width: 100%;
    text-align: center;
    overflow-wrap: anywhere;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    min-height: 2.7em;
}

@media (max-width: 700px) {
    body {
        font-size: 17px;
    }

    .page {
        padding: 0.9rem 0.7rem 1.8rem;
    }

    section,
    .hero {
        padding: 1rem 0.95rem;
    }

    .video-card video {
        height: 170px;
    }
}