:root {
    --changelog-bg: #7c84dc;
    --changelog-panel: rgba(255, 255, 255, 0.96);
    --changelog-panel-soft: rgba(63, 72, 204, 0.07);
    --changelog-border: rgba(24, 61, 80, 0.18);
    --changelog-text: #183d50;
    --changelog-secondary: #405b6b;
    --changelog-muted: #607386;
    --changelog-primary: #3f48cc;
    --changelog-hero: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(237, 239, 255, 0.96));
    --changelog-stat-bg: rgba(63, 72, 204, 0.07);
    --changelog-shadow: rgba(35, 43, 113, 0.2);
    --changelog-eyebrow: #3f48cc;
    --changelog-version-text: #2f3593;
    --changelog-version-bg: rgba(63, 72, 204, 0.12);
    --changelog-note-bg: rgba(224, 242, 254, 0.78);
    --changelog-note-border: rgba(3, 105, 161, 0.24);
    --changelog-note-title: #075985;
    --changelog-note-text: #315b70;
    --changelog-rate-full: #15803d;
    --changelog-rate-half: #a16207;
    --changelog-rate-quarter: #b91c1c;
    --changelog-check: #4f46e5;
}

body {
    background:
        radial-gradient(circle at 12% 10%, rgba(255, 255, 255, 0.34), transparent 34rem),
        radial-gradient(circle at 90% 36%, rgba(63, 72, 204, 0.14), transparent 30rem),
        var(--changelog-bg);
    color: var(--changelog-text);
    transition: background-color 0.25s ease, color 0.25s ease;
}

main.bot-changelog {
    width: min(1120px, calc(100% - 32px));
    max-width: 1120px;
    margin: 34px auto 70px;
    padding: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

.changelog-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
    gap: 32px;
    align-items: end;
    padding: clamp(28px, 5vw, 60px);
    border: 1px solid var(--changelog-border);
    border-radius: 28px;
    background: var(--changelog-hero);
    box-shadow: 0 28px 90px var(--changelog-shadow);
    overflow: hidden;
    position: relative;
}

.changelog-hero::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    right: -100px;
    top: -140px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.18);
    filter: blur(3px);
}

.eyebrow {
    display: inline-block;
    color: var(--changelog-eyebrow);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.changelog-hero h1 {
    margin: 8px 0 14px;
    color: var(--changelog-text);
    font-size: clamp(2.6rem, 7vw, 5rem);
    line-height: 0.95;
    letter-spacing: -0.055em;
}

.changelog-hero p {
    max-width: 670px;
    margin: 0;
    color: var(--changelog-secondary);
    font-size: clamp(1rem, 2vw, 1.2rem);
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.hero-actions a {
    padding: 12px 18px;
    border-radius: 12px;
    font-weight: 750;
    text-decoration: none;
    transition: transform 0.2s ease, background 0.2s ease;
}

.hero-actions a:hover { transform: translateY(-2px); }
.primary-link { background: #5865f2; color: #fff; }
.primary-link:hover { background: #6d78f5; }
.secondary-link { border: 1px solid var(--changelog-border); background: var(--changelog-panel-soft); color: var(--changelog-text); }
.secondary-link:hover { background: rgba(63, 72, 204, 0.14); }

.hero-stats {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 10px;
    margin: 0;
}

.hero-stats div {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 15px 17px;
    border: 1px solid var(--changelog-border);
    border-radius: 14px;
    background: var(--changelog-stat-bg);
}

.hero-stats dt { color: var(--changelog-muted); }
.hero-stats dd { margin: 0; color: var(--changelog-text); font-size: 1.12rem; font-weight: 800; }
.status-dot { display: inline-block; width: 9px; height: 9px; margin-right: 7px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 14px rgba(34, 197, 94, 0.8); }

.level-rates {
    display: grid;
    grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.3fr);
    align-items: center;
    gap: 28px;
    margin: 26px 0 50px;
    padding: 26px 30px;
    border: 1px solid var(--changelog-border);
    border-radius: 22px;
    background: var(--changelog-panel);
}

.level-rates h2 { margin: 6px 0 0; color: var(--changelog-text); font-size: 1.45rem; }
.rate-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.rate-card { padding: 17px; border-radius: 15px; background: var(--changelog-panel-soft); }
.rate-card strong { display: block; margin-bottom: 5px; font-size: 1.5rem; }
.rate-card span { color: var(--changelog-muted); font-size: 0.9rem; }
.rate-full strong { color: var(--changelog-rate-full); }
.rate-half strong { color: var(--changelog-rate-half); }
.rate-quarter strong { color: var(--changelog-rate-quarter); }

.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ''; position: absolute; top: 10px; bottom: 10px; left: 8px; width: 2px; background: linear-gradient(#8b7cf6, rgba(139, 124, 246, 0.12)); }
.release { position: relative; margin-bottom: 26px; }
.timeline-marker { position: absolute; left: -33px; top: 31px; width: 13px; height: 13px; border: 4px solid var(--changelog-bg); border-radius: 50%; background: var(--changelog-primary); box-shadow: 0 0 0 2px rgba(63, 72, 204, 0.36); }

.release-card {
    padding: clamp(23px, 4vw, 36px);
    border: 1px solid var(--changelog-border);
    border-radius: 22px;
    background: var(--changelog-panel);
    box-shadow: 0 16px 48px var(--changelog-shadow);
}

.release-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 22px; }
.release-version { display: inline-flex; padding: 5px 9px; border-radius: 999px; color: var(--changelog-version-text); background: var(--changelog-version-bg); font-size: 0.76rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; }
.release-card h2 { margin: 11px 0 0; color: var(--changelog-text); font-size: clamp(1.35rem, 3vw, 2rem); letter-spacing: -0.025em; }
.release-header time { flex: none; color: var(--changelog-muted); font-size: 0.9rem; }
.release-summary { margin: 18px 0; color: var(--changelog-secondary); font-size: 1.02rem; line-height: 1.65; }
.release-card ul { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.release-card li { position: relative; padding-left: 24px; color: var(--changelog-text); line-height: 1.55; }
.release-card li::before { content: '✓'; position: absolute; left: 0; color: var(--changelog-check); font-weight: 900; }
.release-blue .timeline-marker { background: #38bdf8; }
.release-orange .timeline-marker { background: #f59e0b; }

.release-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 24px 0 0; }
.release-facts div { padding: 14px 16px; border-radius: 13px; background: var(--changelog-panel-soft); }
.release-facts dt { color: var(--changelog-muted); font-size: 0.84rem; }
.release-facts dd { margin: 5px 0 0; color: var(--changelog-text); font-weight: 800; }

.calculation-note { margin: 34px 0 0 34px; padding: 22px 25px; border: 1px solid var(--changelog-note-border); border-radius: 18px; background: var(--changelog-note-bg); }
.calculation-note h2 { margin: 0 0 8px; color: var(--changelog-note-title); font-size: 1.05rem; }
.calculation-note p { margin: 0; color: var(--changelog-note-text); line-height: 1.6; }

body.dark-mode {
    --changelog-bg: #0b1020;
    --changelog-panel: rgba(20, 28, 45, 0.92);
    --changelog-panel-soft: rgba(255, 255, 255, 0.045);
    --changelog-border: rgba(148, 163, 184, 0.2);
    --changelog-text: #e8edf7;
    --changelog-secondary: #c8d2e3;
    --changelog-muted: #9ba9bf;
    --changelog-primary: #8b7cf6;
    --changelog-hero: linear-gradient(135deg, rgba(31, 41, 66, 0.96), rgba(17, 24, 39, 0.94));
    --changelog-stat-bg: rgba(7, 11, 24, 0.42);
    --changelog-shadow: rgba(0, 0, 0, 0.34);
    --changelog-eyebrow: #aeb8ff;
    --changelog-version-text: #c7d2fe;
    --changelog-version-bg: rgba(99, 102, 241, 0.15);
    --changelog-note-bg: rgba(14, 116, 144, 0.1);
    --changelog-note-border: rgba(56, 189, 248, 0.22);
    --changelog-note-title: #e0f2fe;
    --changelog-note-text: #adc3d2;
    --changelog-rate-full: #4ade80;
    --changelog-rate-half: #fbbf24;
    --changelog-rate-quarter: #f87171;
    --changelog-check: #818cf8;
    background:
        radial-gradient(circle at 12% 10%, rgba(88, 101, 242, 0.28), transparent 34rem),
        radial-gradient(circle at 90% 36%, rgba(139, 92, 246, 0.15), transparent 30rem),
        var(--changelog-bg);
}
body.dark-mode main.bot-changelog { background: transparent; }

@media (max-width: 760px) {
    main.bot-changelog { width: min(100% - 20px, 1120px); margin-top: 18px; }
    .changelog-hero { grid-template-columns: 1fr; padding: 28px 22px; border-radius: 21px; }
    .level-rates { grid-template-columns: 1fr; padding: 22px; }
    .rate-grid { grid-template-columns: 1fr; }
    .rate-card { display: flex; align-items: center; justify-content: space-between; }
    .rate-card strong { margin: 0; }
    .timeline { padding-left: 23px; }
    .timeline::before { left: 4px; }
    .timeline-marker { left: -24px; }
    .release-header { display: block; }
    .release-header time { display: inline-block; margin-top: 12px; }
    .release-facts { grid-template-columns: 1fr; }
    .calculation-note { margin-left: 23px; }
}

@media (prefers-reduced-motion: reduce) {
    .hero-actions a { transition: none; }
}