@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
    --brand-teal: #00c9b1;
    --brand-teal-dark: #00a896;
    --brand-black: #0a0a0a;
    --brand-dark: #111827;
    --brand-gray: #1f2937;
    --brand-light-gray: #f9fafb;
    --brand-border: #e5e7eb;
    --brand-text: #111827;
    --brand-text-muted: #6b7280;
    --brand-white: #ffffff;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.7;
    background-color: var(--brand-light-gray);
    color: var(--brand-text);
    -webkit-font-smoothing: antialiased;
}

/* ── Header ── */
header {
    background-color: var(--brand-black);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.brand-logo {
    height: 32px;
    width: auto;
    display: block;
}

.brand-divider {
    width: 1px;
    height: 20px;
    background-color: rgba(255,255,255,0.2);
}

.brand-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: rgba(255,255,255,0.6);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

/* ── Language toggle ── */
.language-toggle {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background-color: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    padding: 0.25rem;
}

.lang-btn {
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 500;
    color: rgba(255,255,255,0.55);
    background: transparent;
    border: none;
    border-radius: 4px;
    padding: 0.35rem 0.85rem;
    cursor: pointer;
    letter-spacing: 0.02em;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.lang-btn:hover {
    color: var(--brand-white);
    background-color: rgba(255,255,255,0.1);
}

.lang-btn.active {
    background-color: var(--brand-teal);
    color: var(--brand-black);
}

/* ── Hero band ── */
.page-hero {
    background-color: var(--brand-dark);
    padding: 3.5rem 1.5rem 3rem;
    text-align: center;
    border-bottom: 3px solid var(--brand-teal);
}

.version-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--brand-black);
    background-color: var(--brand-teal);
    border-radius: 4px;
    padding: 0.2rem 0.65rem;
    margin-bottom: 0.85rem;
}

.page-hero h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--brand-white);
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.page-hero .subtitle {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.45);
    font-weight: 400;
}

/* ── Main content ── */
main {
    max-width: 760px;
    margin: 2.5rem auto 4rem;
    padding: 0 1.5rem;
}

.terms {
    background-color: var(--brand-white);
    border-radius: 12px;
    padding: 2.5rem 3rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 4px 24px rgba(0,0,0,0.06);
    border: 1px solid var(--brand-border);
}

.terms.hidden {
    display: none;
}

/* ── Typography inside terms ── */
.terms h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--brand-text);
    letter-spacing: -0.01em;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--brand-teal);
    display: inline-block;
}

.terms h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--brand-text);
    margin-top: 2rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.terms h3::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 1em;
    background-color: var(--brand-teal);
    border-radius: 2px;
    flex-shrink: 0;
}

.terms h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--brand-text);
    margin-top: 1.25rem;
    margin-bottom: 0.4rem;
    padding-left: 0.75rem;
    border-left: 2px solid var(--brand-border);
}

.terms p {
    font-size: 0.95rem;
    color: var(--brand-text-muted);
    margin-bottom: 1rem;
}

.terms ul {
    margin: 0 0 1rem 0;
    padding-left: 1.5rem;
}

.terms ul li {
    font-size: 0.95rem;
    color: var(--brand-text-muted);
    margin-bottom: 0.4rem;
    line-height: 1.6;
}

.terms a {
    color: var(--brand-teal-dark);
    text-decoration: none;
    font-weight: 500;
}

.terms a:hover {
    text-decoration: underline;
}

/* ── Topic dividers between major service areas ── */
.section-group {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--brand-border);
}

.section-group-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--brand-teal);
    margin-bottom: 1.25rem;
}

/* ── Table of contents ── */
.toc {
    background-color: var(--brand-light-gray);
    border: 1px solid var(--brand-border);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
}

.toc-title {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--brand-text-muted);
    margin-bottom: 0.75rem;
}

.toc ol {
    margin: 0;
    padding-left: 1.25rem;
}

.toc ol li {
    font-size: 0.85rem;
    margin-bottom: 0.3rem;
    color: var(--brand-text-muted);
}

.toc ol li a {
    color: var(--brand-text);
    text-decoration: none;
    font-weight: 500;
}

.toc ol li a:hover {
    color: var(--brand-teal);
    text-decoration: underline;
}

/* ── Footer ── */
footer {
    background-color: var(--brand-black);
    padding: 1.5rem;
    text-align: center;
}

footer p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.3);
}

footer a {
    color: var(--brand-teal);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* ── Responsive ── */
@media (max-width: 600px) {
    .page-hero h1 { font-size: 1.5rem; }
    .terms { padding: 1.5rem 1.25rem; }
    .header-inner { flex-wrap: wrap; }
    .brand-divider, .brand-label { display: none; }
}