/* ==========================================================
   LAION Big Video Dataset — Stylesheet
   ========================================================== */

/* ── Variables ─────────────────────────────────────────── */
:root {
    color-scheme: dark;
    --bg:           #050c14;
    --surface:      #091320;
    --card:         #0d1a28;
    --card-hover:   #122030;
    --border:       rgba(255,255,255,0.07);
    --border-hi:    rgba(255,255,255,0.14);

    --text:         #eef4ff;
    --text-muted:   #6b7fa0;
    --text-dim:     #2a3a50;

    --orange:       #f97316;
    --amber:        #fb923c;
    --gold:         #fbbf24;
    --teal:         #22d3ee;

    --grad:         linear-gradient(135deg, #f97316 0%, #fb923c 55%, #fbbf24 100%);
    --grad-soft:    linear-gradient(135deg, rgba(249,115,22,.18), rgba(251,146,60,.12), rgba(251,191,36,.08));

    --r:            12px;
    --r-lg:         18px;
    --r-xl:         24px;

    --font:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --nav-h:        68px;
    --width:        1160px;
}

/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ── Dot-grid texture ──────────────────────────────────── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: radial-gradient(rgba(255,255,255,.022) 1px, transparent 1px);
    background-size: 36px 36px;
    pointer-events: none;
    z-index: 0;
}

/* ── Utility ───────────────────────────────────────────── */
.container {
    max-width: var(--width);
    margin: 0 auto;
    padding: 0 24px;
}

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

/* ==========================================================
   NAVBAR
   ========================================================== */
.navbar {
    position: fixed;
    inset: 0 0 auto 0;
    height: var(--nav-h);
    z-index: 900;
    transition: background .3s, box-shadow .3s;
}

.navbar.scrolled {
    background: rgba(5,12,20,.88);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    box-shadow: 0 1px 0 var(--border);
}

.nav-container {
    max-width: var(--width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.nav-logo {
    width: 34px;
    height: 34px;
    object-fit: contain;
}

.nav-wordmark {
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: -.01em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2px;
    flex: 1;
}

.nav-link {
    padding: 6px 14px;
    border-radius: 8px;
    font-size: .875rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color .2s, background .2s;
}
.nav-link:hover { color: var(--text); background: rgba(255,255,255,.05); }

.nav-actions { display: flex; gap: 8px; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform .3s, opacity .3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================
   BUTTONS
   ========================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 18px;
    border-radius: var(--r);
    font-family: var(--font);
    font-size: .875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s;
    border: 1px solid transparent;
    white-space: nowrap;
    position: relative;
}

.btn-icon { width: 15px; height: 15px; flex-shrink: 0; }

.btn-primary {
    background: var(--grad);
    color: #fff;
    box-shadow: 0 4px 16px rgba(249,115,22,.3);
}
.btn-primary:hover { opacity: .88; transform: translateY(-1px); box-shadow: 0 8px 28px rgba(249,115,22,.45); }

.btn-outline {
    background: transparent;
    border-color: var(--border-hi);
    color: var(--text);
}
.btn-outline:hover { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.28); transform: translateY(-1px); }

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
}
.btn-ghost:hover { color: var(--text); background: rgba(255,255,255,.05); }

.btn-lg {
    padding: 13px 26px;
    font-size: .95rem;
    border-radius: var(--r-lg);
}
.btn-lg .btn-icon { width: 17px; height: 17px; }

/* ==========================================================
   HERO
   ========================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: calc(var(--nav-h) + 56px) 24px 96px;
    z-index: 1;
}

.hero-glow {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 55% at 12% 42%, rgba(249,115,22,.28) 0%, transparent 60%),
        radial-gradient(ellipse 65% 45% at 88% 58%, rgba(251,191,36,.2) 0%, transparent 55%),
        radial-gradient(ellipse 55% 60% at 50% 105%, rgba(6,182,212,.15) 0%, transparent 58%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 860px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    border-radius: 100px;
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: #fb923c;
    background: rgba(249,115,22,.12);
    border: 1px solid rgba(249,115,22,.28);
    margin-bottom: 36px;
}
.hero-badge::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: #fb923c;
    animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
    0%,100% { opacity: 1; transform: scale(1); }
    50%      { opacity: .5; transform: scale(.7); }
}

/* banner */
.hero-banner-wrap { margin-bottom: 44px; }

.hero-banner {
    max-width: 100%;
    width: 680px;
    border-radius: var(--r-xl);
    box-shadow:
        0 40px 90px rgba(0,0,0,.55),
        0 0 0 1px rgba(255,255,255,.06),
        0 0 70px rgba(249,115,22,.12);
    display: block;
}

/* title */
.hero-title {
    font-size: clamp(2rem, 5vw, 3.4rem);
    padding: 2px;
    font-weight: 900;
    letter-spacing: -.03em;
    line-height: 1.08;
    margin-bottom: 18px;
    background: linear-gradient(160deg, #fff 30%, rgba(255,255,255,.7) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* subtitle */
.hero-subtitle {
    font-size: clamp(.95rem, 2vw, 1.18rem);
    color: var(--text-muted);
    font-weight: 400;
    line-height: 1.65;
    margin-bottom: 44px;
}

/* ── animated text ── */
.hero-animated {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    margin-bottom: 44px;
}

.anim-static {
    font-size: 1rem; /* clamp(.85rem, 1.6vw, 1rem); */
    font-weight: 500;
    /* color: var(--text-muted); */
    letter-spacing: .04em;
    text-transform: uppercase;
}

.anim-phrase {
    display: block;
    font-size: clamp(1.5rem, 3.8vw, 2.4rem);
    font-weight: 800;
    letter-spacing: -.02em;
    white-space: nowrap;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 1;
    transform: translateY(0);
    transition: opacity .32s ease, transform .32s ease;
}

.anim-phrase.ph-exit {
    opacity: 0;
    transform: translateY(-18px);
}

.anim-phrase.ph-reset {
    opacity: 0;
    transform: translateY(18px);
    transition: none;
}

/* cta row */
.hero-cta {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* authors block */
.hero-authors {
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    max-width: 780px;
}

.authors-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: baseline;
    gap: 4px 2px;
    font-size: .9rem;
    line-height: 1.7;
}

.author {
    white-space: nowrap;
    color: var(--text);
    font-weight: 500;
}
.author sup {
    font-size: .65em;
    color: #fb923c;
    font-weight: 600;
    letter-spacing: .02em;
}

.author-sep {
    color: var(--text-dim);
    font-size: .75rem;
    padding: 0 3px;
}

.authors-note {
    font-size: .78rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2px;
}
.authors-note sup { font-size: .7em; color: #fb923c; }
.authors-note-sep { color: var(--text-dim); }

.authors-affils {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px 18px;
    font-size: .75rem;
    color: var(--text-muted);
    line-height: 1.6;
    text-align: center;
}
.authors-affils sup { font-size: .7em; color: #fb923c; font-weight: 600; }

/* scroll cue */
.scroll-cue {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-dim);
    animation: cue-bounce 2.2s ease-in-out infinite;
}
.scroll-cue svg { width: 28px; height: 28px; }
@keyframes cue-bounce {
    0%,100% { transform: translateX(-50%) translateY(0); opacity: .5; }
    50%      { transform: translateX(-50%) translateY(9px); opacity: 1; }
}

/* ==========================================================
   SECTION SHARED
   ========================================================== */
.section-eyebrow {
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: #fb923c;
    margin-bottom: 10px;
}

.section-title {
    font-size: clamp(1.8rem, 3.8vw, 2.7rem);
    font-weight: 800;
    letter-spacing: -.03em;
    line-height: 1.13;
    margin-bottom: 14px;
}

.section-desc {
    font-size: 1.02rem;
    color: var(--text-muted);
    max-width: 540px;
    line-height: 1.6;
}

/* ==========================================================
   AFFILIATIONS
   ========================================================== */
.affil-strip {
    position: relative;
    z-index: 1;
    padding: 36px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,.018);
}

.affil-label {
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--text-dim);
    text-align: center;
    margin-bottom: 20px;
}

.affil-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 36px 52px;
}

.affil-logo {
    height: 32px;
    width: auto;
    max-width: 160px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: .45;
    transition: opacity .2s, filter .2s;
}
.affil-logo:hover {
    opacity: .75;
}

.affil-logo--color {
    filter: none;
    opacity: .7;
    border-radius: 8px;
}
.affil-logo--color:hover {
    opacity: 1;
}

/* ==========================================================
   STATS
   ========================================================== */
.stats-section {
    position: relative;
    z-index: 1;
    padding: 100px 0;
    background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-top: 56px;
}

@media (max-width: 1000px) {
    .stats-grid { grid-template-columns: repeat(3, 1fr); }
}

.stat-card {
    position: relative;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 28px 20px 24px;
    text-align: center;
    overflow: hidden;
    transition: transform .3s, border-color .3s, box-shadow .3s;
}

.stat-card::after {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 2px;
    background: var(--grad);
    opacity: 0;
    transition: opacity .3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hi);
    box-shadow: 0 20px 44px rgba(0,0,0,.35);
}
.stat-card:hover::after { opacity: 1; }

.stat-emoji { font-size: 1.7rem; margin-bottom: 14px; }

.stat-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: -.03em;
    line-height: 1;
    margin-bottom: 8px;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: .85rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
}

.stat-card .stat-desc {
    font-size: .75rem;
    color: var(--text-muted);
    line-height: 1.45;
    max-width: none;
}

/* ==========================================================
   ABSTRACT
   ========================================================== */
.abstract-section {
    position: relative;
    z-index: 1;
    padding: 100px 0;
}

.abstract-card {
    position: relative;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 52px 60px;
    margin-top: 44px;
    overflow: hidden;
}

.abstract-card::before {
    content: '"';
    position: absolute;
    top: -28px;
    left: 44px;
    font-size: 220px;
    line-height: 1;
    color: rgba(249,115,22,.055);
    font-family: Georgia, 'Times New Roman', serif;
    pointer-events: none;
    user-select: none;
}

.abstract-card p {
    font-size: 1.04rem;
    line-height: 1.85;
    color: rgba(238,244,255,.84);
    margin-bottom: 22px;
    position: relative;
}
.abstract-card p:last-child { margin-bottom: 0; }

.abstract-card strong { color: var(--text); font-weight: 700; }
.abstract-card em     { font-style: normal; color: #fdba74; font-weight: 500; }

/* ==========================================================
   FEATURES
   ========================================================== */
.features-section {
    position: relative;
    z-index: 1;
    padding: 100px 0;
    background: var(--surface);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 56px;
}

.feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 36px 32px;
    transition: transform .3s, border-color .3s, box-shadow .3s;
}
.feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-hi);
    box-shadow: 0 28px 56px rgba(0,0,0,.35);
}

.feature-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 24px;
}

.feature-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.feature-icon svg { width: 24px; height: 24px; }

.feat-video {
    background: rgba(249,115,22,.14);
    border: 1px solid rgba(249,115,22,.22);
    color: #fb923c;
}
.feat-audio {
    background: rgba(6,182,212,.14);
    border: 1px solid rgba(6,182,212,.22);
    color: #22d3ee;
}
.feat-image {
    background: rgba(251,191,36,.13);
    border: 1px solid rgba(251,191,36,.22);
    color: #fcd34d;
}

.feature-tag {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 6px;
    background: rgba(255,255,255,.04);
    border: 1px solid var(--border);
    color: var(--text-muted);
}

.feature-card h3 {
    font-size: 1.22rem;
    font-weight: 700;
    letter-spacing: -.02em;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: .94rem;
    color: var(--text-muted);
    line-height: 1.72;
    margin-bottom: 22px;
}

.feature-bullets {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.feature-bullets li {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: .83rem;
    color: var(--text-muted);
}
.feature-bullets li::before {
    content: '';
    flex-shrink: 0;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--grad);
}

/* ==========================================================
   CITATION
   ========================================================== */
.citation-section {
    position: relative;
    z-index: 1;
    padding: 100px 0;
}

.citation-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    overflow: hidden;
    margin-top: 44px;
}

.citation-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 28px;
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,.02);
}

.citation-lang {
    font-size: .74rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(255,255,255,.05);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-muted);
    font-family: var(--font);
    font-size: .78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s;
}
.copy-btn svg { width: 13px; height: 13px; }
.copy-btn:hover { background: rgba(255,255,255,.09); color: var(--text); border-color: var(--border-hi); }
.copy-btn.copied { color: #34d399; border-color: rgba(52,211,153,.3); background: rgba(52,211,153,.07); }

.citation-pre {
    padding: 30px 32px;
    font-family: 'Courier New', Courier, monospace;
    font-size: .83rem;
    line-height: 1.75;
    color: rgba(238,244,255,.72);
    white-space: pre;
    overflow-x: auto;
}

/* ==========================================================
   FOOTER
   ========================================================== */
.footer {
    position: relative;
    z-index: 1;
    padding: 52px 0 32px;
    background: var(--surface);
    border-top: 1px solid var(--border);
}

.footer-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 32px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.footer-logo {
    width: 44px; height: 44px;
    object-fit: contain;
}

.footer-name {
    font-weight: 700;
    font-size: .95rem;
}

.footer-tagline {
    font-size: .78rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.footer-links {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}
.footer-links a {
    font-size: .875rem;
    color: var(--text-muted);
    transition: color .2s;
}
.footer-links a:hover { color: var(--text); }

.footer-rule {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    font-size: .78rem;
    color: var(--text-dim);
}

/* ==========================================================
   DOWNLOAD PAGE
   ========================================================== */
.dl-hero {
    position: relative;
    padding: calc(var(--nav-h) + 64px) 0 72px;
    overflow: hidden;
    z-index: 1;
}

.dl-hero-glow {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 60% at 20% 50%, rgba(249,115,22,.2) 0%, transparent 60%),
        radial-gradient(ellipse 50% 50% at 80% 40%, rgba(6,182,212,.14) 0%, transparent 55%);
    pointer-events: none;
}

.dl-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .875rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color .2s;
}
.dl-back svg { width: 16px; height: 16px; }
.dl-back:hover { color: var(--text); }

.dl-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
    font-weight: 900;
    letter-spacing: -.03em;
    line-height: 1.1;
    margin-bottom: 16px;
    background: linear-gradient(160deg, #fff 30%, rgba(255,255,255,.7) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.dl-subtitle {
    font-size: 1.06rem;
    color: var(--text-muted);
    line-height: 1.65;
}

/* ── Main content ── */
.dl-main {
    position: relative;
    z-index: 1;
    padding: 0 0 120px;
}

/* ── Groups grid ── */
.dl-groups-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}

/* ── Group ── */
.dl-group {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    overflow: hidden;
}

.dl-group-header {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 28px 32px;
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,.02);
}

.dl-group-icon {
    width: 44px; height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: rgba(249,115,22,.12);
    border: 1px solid rgba(249,115,22,.22);
    color: #fb923c;
}
.dl-group-icon svg { width: 22px; height: 22px; }

.dl-group-icon--url {
    background: rgba(34,211,238,.1);
    border-color: rgba(34,211,238,.2);
    color: var(--teal);
}

.dl-group-title {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -.02em;
    margin-bottom: 3px;
}

.dl-group-desc {
    font-size: .86rem;
    color: var(--text-muted);
}

/* ── Cards ── */
.dl-cards {
    display: flex;
    flex-direction: column;
}

.dl-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 24px 32px;
    border-bottom: 1px solid var(--border);
    transition: background .2s;
}
.dl-card:last-child { border-bottom: none; }
.dl-card:hover { background: rgba(255,255,255,.025); }

.dl-card-left {
    flex: 1;
    min-width: 0;
}

.dl-card-name {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -.01em;
    margin-bottom: 6px;
    margin-top: 8px;
}

.dl-card-desc {
    font-size: .88rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 10px;
}

.dl-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* ── Badges ── */
.dl-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 6px;
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .07em;
    text-transform: uppercase;
}

.dl-badge--video {
    background: rgba(249,115,22,.14);
    border: 1px solid rgba(249,115,22,.25);
    color: #fb923c;
}
.dl-badge--audio {
    background: rgba(6,182,212,.14);
    border: 1px solid rgba(6,182,212,.25);
    color: #22d3ee;
}
.dl-badge--image {
    background: rgba(251,191,36,.12);
    border: 1px solid rgba(251,191,36,.22);
    color: #fcd34d;
}
.dl-badge--url {
    background: rgba(34,211,238,.1);
    border: 1px solid rgba(34,211,238,.2);
    color: var(--teal);
}

/* ── Meta chips ── */
.dl-meta-chip {
    display: inline-flex;
    padding: 2px 9px;
    border-radius: 5px;
    font-size: .72rem;
    font-weight: 500;
    background: rgba(255,255,255,.05);
    border: 1px solid var(--border);
    color: var(--text-muted);
}

/* ── Hugging Face button ── */
.btn-hf {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 18px;
    border-radius: var(--r);
    font-family: var(--font);
    font-size: .85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s;
    white-space: nowrap;
    flex-shrink: 0;
    background: rgba(255,196,0,.1);
    border: 1px solid rgba(255,196,0,.22);
    color: #fcd34d;
}
.btn-hf:hover {
    background: rgba(255,196,0,.18);
    border-color: rgba(255,196,0,.38);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(255,196,0,.12);
}
.btn-hf .btn-icon { width: 15px; height: 15px; flex-shrink: 0; }

@media (max-width: 900px) {
    .dl-groups-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .dl-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    .dl-group-header { flex-direction: column; align-items: flex-start; gap: 12px; }
    .dl-hero { padding-bottom: 48px; }
}
/* ==========================================================
   ACCESS / STEPS PAGE
   ========================================================== */
.access-section {
    position: relative;
    z-index: 1;
    padding: 80px 0 120px;
}

.steps-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
    margin-top: 56px;
}

.step-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    overflow: hidden;
    transition: border-color .3s;
}
.step-card:hover { border-color: var(--border-hi); }

.step-header {
    display: flex;
    align-items: center;
    gap: 22px;
    padding: 26px 36px;
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,.02);
}

.step-num {
    width: 44px; height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 900;
    flex-shrink: 0;
    background: var(--grad);
    color: #fff;
    box-shadow: 0 4px 16px rgba(249,115,22,.3);
}

.step-header-text h3 {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -.02em;
    margin-bottom: 2px;
}
.step-header-text p {
    font-size: .88rem;
    color: var(--text-muted);
}

.step-body {
    padding: 36px;
}
.step-body > p {
    font-size: .96rem;
    color: rgba(238,244,255,.84);
    line-height: 1.8;
    margin-bottom: 24px;
}
.step-body > p:last-child { margin-bottom: 0; }

.step-action {
    margin-top: 8px;
}

.code-card {
    background: rgba(0,0,0,.28);
    border: 1px solid var(--border);
    border-radius: var(--r);
    overflow: hidden;
    margin-bottom: 24px;
}
.code-card:last-child { margin-bottom: 0; }

.code-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,.025);
}
.code-lang {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .09em;
    text-transform: uppercase;
    color: var(--text-muted);
}
.code-pre {
    padding: 22px 24px;
    font-family: 'Courier New', Courier, monospace;
    font-size: .8rem;
    line-height: 1.72;
    color: rgba(238,244,255,.72);
    white-space: pre;
    overflow-x: auto;
    margin: 0;
}

.step-note {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--r);
    background: rgba(34,211,238,.07);
    border: 1px solid rgba(34,211,238,.18);
    font-size: .875rem;
    color: rgba(238,244,255,.8);
    line-height: 1.6;
    margin-bottom: 24px;
}
.step-note svg { flex-shrink: 0; color: #22d3ee; margin-top: 1px; }

.step-note--warn {
    background: rgba(249,115,22,.07);
    border-color: rgba(249,115,22,.2);
}
.step-note--warn svg { color: #fb923c; }

.restricted-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    border-radius: 100px;
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: #22d3ee;
    background: rgba(6,182,212,.1);
    border: 1px solid rgba(6,182,212,.25);
    margin-top: 20px;
    margin-bottom: 4px;
}

.btn-access {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 22px;
    border-radius: var(--r);
    font-family: var(--font);
    font-size: .9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s;
    white-space: nowrap;
    background: rgba(34,211,238,.1);
    border: 1px solid rgba(34,211,238,.25);
    color: #22d3ee;
}
.btn-access:hover {
    background: rgba(34,211,238,.18);
    border-color: rgba(34,211,238,.42);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(34,211,238,.1);
}
.btn-access .btn-icon { width: 15px; height: 15px; }

.btn-raw {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 18px;
    border-radius: var(--r);
    font-family: var(--font);
    font-size: .85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s;
    white-space: nowrap;
    flex-shrink: 0;
    background: rgba(34,211,238,.1);
    border: 1px solid rgba(34,211,238,.22);
    color: #22d3ee;
}
.btn-raw:hover {
    background: rgba(34,211,238,.18);
    border-color: rgba(34,211,238,.38);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(34,211,238,.1);
}
.btn-raw .btn-icon { width: 15px; height: 15px; flex-shrink: 0; }

/* ==========================================================
   SCROLL-REVEAL
   ========================================================== */
.reveal-up, .reveal-fade {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .65s ease, transform .65s ease;
}
.reveal-fade {
    transform: none;
}
.reveal-up.visible, .reveal-fade.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: .1s; }
.delay-2 { transition-delay: .2s; }
.delay-3 { transition-delay: .32s; }
.delay-4 { transition-delay: .44s; }
.delay-5 { transition-delay: .58s; }

/* ==========================================================
   RESPONSIVE
   ========================================================== */
@media (max-width: 900px) {
    .features-grid { grid-template-columns: 1fr; }
    .nav-menu, .nav-actions { display: none; }
    .nav-toggle { display: flex; }

    .nav-menu.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--nav-h);
        left: 0; right: 0;
        background: rgba(5,12,20,.96);
        backdrop-filter: blur(22px);
        -webkit-backdrop-filter: blur(22px);
        border-top: 1px solid var(--border);
        padding: 16px 24px 20px;
        gap: 4px;
    }
}

@media (max-width: 720px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .abstract-card { padding: 36px 28px; }
    .abstract-card::before { display: none; }
    .hero-animated { gap: 4px; }
}

@media (max-width: 500px) {
    .stats-grid { grid-template-columns: 1fr; }
    .hero-cta { flex-direction: column; align-items: stretch; }
    .hero-cta .btn { justify-content: center; }
    .footer-body { flex-direction: column; }
    .footer-links { justify-content: center; }
}