*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
    --emerald-50: #ecfdf5;
    --emerald-100: #d1fae5;
    --emerald-200: #a7f3d0;
    --emerald-700: #047857;
    --emerald-800: #065f46;
    --emerald-900: #064e3b;
    --emerald-950: #022c22;
    --stone-50: #fafaf9;
    --stone-100: #f5f5f4;
    --stone-200: #e7e5e4;
    --stone-300: #d6d3d1;
    --stone-400: #a8a29e;
    --stone-500: #78716c;
    --stone-600: #57534e;
    --stone-700: #44403c;
    --stone-800: #292524;
    --stone-900: #1c1917;
    --stone-950: #0c0a09;
    --bg: #fcfdfa;
    --amber-400: #fbbf24;
    --amber-500: #f59e0b;
}
html { scroll-behavior: smooth; }
body {
    font-family: 'Assistant', system-ui, -apple-system, sans-serif;
    background-color: var(--bg);
    color: var(--stone-800);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.7;
}
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--stone-100); }
::-webkit-scrollbar-thumb { background: var(--stone-300); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--stone-400); }

/* HEADER */
.page-header {
    background: linear-gradient(135deg, var(--emerald-950) 0%, var(--stone-900) 50%, var(--emerald-900) 100%);
    padding: 48px 24px 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-header::before {
    content: '';
    position: absolute;
    top: -60px; right: -60px;
    width: 320px; height: 320px;
    background: radial-gradient(circle, rgba(4,120,87,0.25) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.page-header::after {
    content: '';
    position: absolute;
    bottom: -50px; left: -50px;
    width: 220px; height: 220px;
    background: radial-gradient(circle, rgba(251,191,36,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    color: rgba(255,255,255,0.55);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s;
    position: relative; z-index: 1;
}
.back-btn:hover { color: rgba(255,255,255,0.9); }
.header-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 50px;
    color: rgba(255,255,255,0.65);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 18px;
    position: relative; z-index: 1;
    backdrop-filter: blur(8px);
}
.page-header h1 {
    font-size: clamp(1.9rem, 5vw, 3.2rem);
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
    position: relative; z-index: 1;
    line-height: 1.15;
}
.page-header .subtitle {
    color: rgba(255,255,255,0.55);
    margin-top: 10px;
    font-size: 14px;
    position: relative; z-index: 1;
}

/* CONTENT */
.content-wrapper {
    max-width: 860px;
    margin: -40px auto 80px;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}
.content-card {
    background: #fff;
    border-radius: 28px;
    border: 1px solid var(--stone-200);
    box-shadow: 0 20px 60px rgba(0,0,0,0.07), 0 4px 16px rgba(0,0,0,0.04);
    overflow: hidden;
}

/* TOC */
.toc-bar {
    background: var(--stone-50);
    border-bottom: 1px solid var(--stone-200);
    padding: 18px 36px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    align-items: center;
}
.toc-bar > span { font-size: 11px; font-weight: 700; color: var(--stone-400); text-transform: uppercase; letter-spacing: 0.08em; margin-left: 6px; flex-shrink: 0; }
.toc-link {
    font-size: 12px;
    font-weight: 600;
    color: var(--stone-500);
    text-decoration: none;
    padding: 4px 10px;
    border-radius: 20px;
    transition: all 0.2s;
    border: 1px solid transparent;
}
.toc-link:hover { color: var(--emerald-700); background: var(--emerald-50); border-color: var(--emerald-100); }

/* BODY */
.content-body { padding: 44px 44px 56px; }

/* UPDATE NOTE */
.update-note {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: var(--emerald-50);
    border: 1px solid var(--emerald-100);
    border-radius: 14px;
    padding: 14px 20px;
    margin-bottom: 40px;
    font-size: 13.5px;
    color: var(--emerald-900);
    line-height: 1.6;
}
.update-note i { color: var(--emerald-700); font-size: 16px; flex-shrink: 0; margin-top: 2px; }

/* SECTION */
.section { margin-bottom: 48px; }
.section:last-child { margin-bottom: 0; }
.section-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1.5px solid var(--stone-100);
}
.section-icon {
    width: 40px; height: 40px;
    border-radius: 12px;
    background: var(--emerald-50);
    color: var(--emerald-700);
    display: flex; align-items: center; justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    border: 1px solid var(--emerald-100);
}
.section-icon.amber { background: #fffbeb; color: var(--amber-500); border-color: #fef3c7; }
.section-icon.rose { background: #fff1f2; color: #e11d48; border-color: #fecdd3; }
.section-icon.sky { background: #f0f9ff; color: #0284c7; border-color: #bae6fd; }
.section h2 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--stone-900);
    letter-spacing: -0.01em;
}
.section-num {
    font-size: 10px;
    font-weight: 700;
    color: var(--stone-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 2px;
}
.section p {
    font-size: 14.5px;
    color: var(--stone-600);
    line-height: 1.8;
    margin-bottom: 14px;
}
.section p:last-child { margin-bottom: 0; }
.section ul {
    list-style: none;
    padding: 0;
    margin: 10px 0;
}
.section ul li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14.5px;
    color: var(--stone-600);
    margin-bottom: 8px;
    line-height: 1.7;
}
.section ul li::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--emerald-700);
    flex-shrink: 0;
    margin-top: 9px;
}
strong { color: var(--stone-800); font-weight: 700; }
.inline-link { color: var(--emerald-700); font-weight: 700; text-decoration: none; }
.inline-link:hover { text-decoration: underline; }

/* HIGHLIGHT BOX */
.highlight-box {
    background: var(--stone-50);
    border-right: 4px solid var(--emerald-700);
    border-radius: 0 12px 12px 0;
    padding: 14px 18px;
    margin: 14px 0;
    font-size: 14px;
    color: var(--stone-700);
    line-height: 1.75;
}
.highlight-box.amber { border-right-color: var(--amber-500); }
.highlight-box.rose { border-right-color: #e11d48; }

/* INFO CARDS GRID */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin: 16px 0;
}
.info-card {
    background: var(--stone-50);
    border: 1px solid var(--stone-200);
    border-radius: 14px;
    padding: 16px;
    text-align: center;
}
.info-card .ic-icon {
    width: 40px; height: 40px;
    border-radius: 10px;
    background: var(--emerald-50);
    color: var(--emerald-700);
    display: flex; align-items: center; justify-content: center;
    font-size: 16px;
    margin: 0 auto 10px;
    border: 1px solid var(--emerald-100);
}
.info-card .ic-label { font-size: 11px; font-weight: 700; color: var(--stone-400); text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 4px; }
.info-card .ic-value { font-size: 15px; font-weight: 800; color: var(--stone-900); }
.info-card .ic-sub { font-size: 11.5px; color: var(--stone-500); margin-top: 2px; }

/* TABLE */
.data-table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 13.5px; }
.data-table th { background: var(--stone-900); color: #fff; font-weight: 700; padding: 10px 14px; text-align: right; font-size: 12px; letter-spacing: 0.03em; }
.data-table th:first-child { border-radius: 0 10px 0 0; }
.data-table th:last-child { border-radius: 10px 0 0 0; }
.data-table td { padding: 10px 14px; color: var(--stone-600); border-bottom: 1px solid var(--stone-100); vertical-align: top; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:nth-child(even) td { background: var(--stone-50); }
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11.5px;
    font-weight: 700;
}
.badge.green { background: var(--emerald-50); color: var(--emerald-800); }
.badge.amber { background: #fffbeb; color: #92400e; }
.badge.rose { background: #fff1f2; color: #9f1239; }

/* FOOTER */
.page-footer {
    text-align: center;
    padding: 24px 20px;
    border-top: 1px solid var(--stone-200);
    background: var(--stone-50);
}
.page-footer p { font-size: 12.5px; color: var(--stone-400); }
.footer-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 6px 18px; margin-top: 10px; }
.footer-links a { font-size: 12.5px; color: var(--emerald-700); text-decoration: none; font-weight: 600; }
.footer-links a:hover { text-decoration: underline; }

/* RESPONSIVE */
@media (max-width: 640px) {
    .content-body { padding: 26px 20px 38px; }
    .toc-bar { padding: 14px 20px; }
    .page-header { padding: 36px 20px 64px; }
    .info-grid { grid-template-columns: 1fr 1fr; }
    .data-table { font-size: 12px; }
    .data-table th, .data-table td { padding: 8px 10px; }
}