:root {
    --bg: #0f172a;
    --bg2: #1e1b4b;
    --card: #161f30;
    --text: #f8fafc;
    --muted: #94a3b8;
    --accent: #6366f1;
    --accent2: #a855f7;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #f8fafc;
        --bg2: #eef2ff;
        --card: #ffffff;
        --text: #0f172a;
        --muted: #475569;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans", "Noto Sans CJK SC", "Noto Sans CJK JP", "Noto Sans CJK KR", sans-serif;
    background: linear-gradient(160deg, var(--bg), var(--bg2));
    background-attachment: fixed;
    color: var(--text);
    line-height: 1.55;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--accent); }

.top, main, .foot { width: 100%; max-width: 980px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }

.top { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; padding-top: 18px; padding-bottom: 18px; }
.top-left, .top-right { display: flex; align-items: center; gap: 16px; }

.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }

.head-nav { display: flex; align-items: center; gap: 12px; }
.nav-link { color: var(--muted); text-decoration: none; font-size: 0.92rem; font-weight: 500; transition: color 0.15s ease; }
.nav-link:hover, .nav-link.active { color: var(--text); }

.lang-dropdown { position: relative; display: inline-block; }
.lang-summary {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 12px;
    border-radius: 9px;
    border: 1px solid rgba(148, 163, 184, 0.25);
    background: rgba(22, 31, 48, 0.7);
    color: var(--text);
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    user-select: none;
    list-style: none;
    transition: border-color 0.15s, background 0.15s;
}
.lang-summary::-webkit-details-marker { display: none; }
.lang-summary:hover {
    border-color: var(--accent);
    background: var(--card);
}
.lang-summary .globe-icon { color: var(--muted); flex-shrink: 0; }
.lang-summary .chevron { color: var(--muted); transition: transform 0.2s ease; flex-shrink: 0; }
.lang-dropdown[open] .chevron { transform: rotate(180deg); }

.lang-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    z-index: 100;
    min-width: 150px;
    margin: 0;
    padding: 6px 0;
    list-style: none;
    background: var(--card);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 10px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
}
.lang-menu li { margin: 0; padding: 0; }
.lang-menu a {
    display: block;
    padding: 7px 14px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.88rem;
    transition: background 0.15s, color 0.15s;
}
.lang-menu a:hover {
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent);
}
.lang-menu a.active {
    font-weight: 600;
    color: var(--accent);
    background: rgba(99, 102, 241, 0.1);
}

main { flex: 1; padding-bottom: 32px; }

.hero { padding: 36px 0 20px; }
.hero h1 { font-size: clamp(1.8rem, 5vw, 2.8rem); line-height: 1.15; margin: 0 0 12px; background: linear-gradient(90deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { color: var(--muted); font-size: 1.1rem; max-width: 62ch; margin: 0; }

.card { background: var(--card); border-radius: 14px; padding: 20px; margin: 16px 0; }
.card h2 { margin-top: 0; }

.downloads { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.dl h3 { margin: 0 0 8px; font-size: 1rem; }

.btn { display: inline-block; padding: 9px 18px; border-radius: 10px; border: 0; background: linear-gradient(90deg, var(--accent), var(--accent2)); color: #fff; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; margin: 0 8px 8px 0; }
.btn.ghost { background: transparent; border: 1px solid var(--accent); color: var(--text); }

.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.plans ul { padding-left: 20px; margin: 0 0 16px; }
.price { font-size: 1.6rem; font-weight: 700; margin: 0 0 8px; }
.pro { border: 1px solid var(--accent); }
.muted { color: var(--muted); }

.whats-new-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--accent);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 500;
    margin-left: 8px;
    padding: 2px 8px;
    border-radius: 6px;
    background: rgba(99, 102, 241, 0.12);
    transition: background 0.15s, color 0.15s;
}
.whats-new-link:hover {
    background: rgba(99, 102, 241, 0.22);
    text-decoration: underline;
}

/* Releases page */
.release-card {
    background: var(--card);
    border-radius: 14px;
    padding: 24px;
    margin: 20px 0;
    border: 1px solid rgba(148, 163, 184, 0.15);
}
.release-card.latest {
    border-color: rgba(99, 102, 241, 0.45);
    box-shadow: 0 4px 20px -2px rgba(99, 102, 241, 0.15);
}
.release-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.15);
}
.release-title-row {
    display: flex;
    align-items: center;
    gap: 12px;
}
.release-title {
    margin: 0;
    font-size: 1.45rem;
}
.badge-latest {
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 8px;
    border-radius: 6px;
}
.release-date {
    color: var(--muted);
    font-size: 0.9rem;
}
.release-body {
    margin: 16px 0;
    line-height: 1.6;
}
.release-body h2, .release-body h3, .release-body h4 {
    margin-top: 14px;
    margin-bottom: 8px;
    color: var(--text);
}
.release-body ul, .release-body ol {
    margin: 8px 0 14px 20px;
    padding-left: 0;
}
.release-body li {
    margin-bottom: 4px;
}
.release-body code {
    background: rgba(148, 163, 184, 0.15);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.88em;
}
.release-downloads {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid rgba(148, 163, 184, 0.1);
}
.back-link {
    display: inline-block;
    margin-bottom: 16px;
    color: var(--muted);
    text-decoration: none;
    font-size: 0.92rem;
}
.back-link:hover {
    color: var(--text);
    text-decoration: underline;
}

.legal-doc h2 { font-size: 1.05rem; margin-bottom: 4px; }
.legal-doc p { margin-top: 0; }

.foot { padding-top: 16px; padding-bottom: 28px; color: var(--muted); font-size: .9rem; }
.foot .legal a { margin-right: 14px; }