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

:root {
  --bg: #16121F;
  --bg-2: #1D1729;
  --card: #241D33;
  --card-2: #2D2440;
  --line: rgba(255,255,255,0.1);
  --white: #F6F1FB;
  --slate: #B8AECF;
  --muted: #79708F;
  --purple: #8B5CF6;
  --pink: #EC4899;
  --amber: #F59E0B;
  --cyan: #38D9C4;
  --grad: linear-gradient(120deg, #8B5CF6, #EC4899, #F59E0B);
  --grad-2: linear-gradient(120deg, #8B5CF6, #EC4899);
  --radius: 16px;
  --maxw: 820px;
  --fd: 'Space Grotesk', system-ui, sans-serif;
  --fb: 'Inter', system-ui, sans-serif;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--fb); background: var(--bg); color: var(--white); line-height: 1.75; }
img, svg { display: block; max-width: 100%; }
a { color: var(--pink); }
ul { list-style: none; }

.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 8px; top: 8px; background: var(--purple); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }

.container { width: 100%; max-width: 1080px; margin-inline: auto; padding-inline: 20px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(22,18,31,0.86); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.header-bar { display: flex; align-items: center; justify-content: space-between; min-height: 60px; }
.brand { display: flex; align-items: center; gap: 9px; font-family: var(--fd); font-weight: 700; font-size: 19px; color: var(--white); text-decoration: none; }
.brand-mark { width: 32px; height: 32px; border-radius: 9px; background: var(--grad-2); display: grid; place-items: center; font-size: 17px; }
.brand b { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.nav-inline { display: flex; gap: 8px; }
.nav-inline a { color: var(--slate); font-size: 13px; font-weight: 600; padding: 8px 12px; border-radius: 8px; text-decoration: none; }
.nav-inline a:hover { background: var(--card); color: var(--white); }
@media (max-width: 560px) { .nav-inline { display: none; } }

/* Hero */
.hero { position: relative; overflow: hidden; padding-block: 56px 40px; }
.hero::before { content: ""; position: absolute; top: -40%; right: -10%; width: 560px; height: 560px; background: radial-gradient(circle, rgba(236,72,153,.2), transparent 60%); pointer-events: none; }
.hero::after { content: ""; position: absolute; bottom: -50%; left: -15%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(139,92,246,.18), transparent 60%); pointer-events: none; }
.hero-inner { position: relative; max-width: var(--maxw); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-family: var(--fd); font-size: 12.5px; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; color: var(--amber); background: rgba(245,158,11,.1); border: 1px solid rgba(245,158,11,.25); padding: 6px 14px; border-radius: 999px; margin-bottom: 22px; }
.hero h1 { font-family: var(--fd); font-size: clamp(28px, 5vw, 48px); font-weight: 700; line-height: 1.12; letter-spacing: -0.02em; margin-bottom: 18px; }
.hero h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 13px; color: var(--muted); }

/* Article */
.article { max-width: var(--maxw); margin-inline: auto; padding-block: 24px 50px; }
.figure { aspect-ratio: 16/8; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); margin-bottom: 32px; }
.figure svg { width: 100%; height: 100%; }
.lead { font-size: 19px; color: var(--slate); margin-bottom: 22px; }
.answer { background: linear-gradient(135deg, rgba(139,92,246,.16), rgba(236,72,153,.1)); border: 1px solid var(--line); border-left: 4px solid var(--amber); border-radius: 14px; padding: 22px 26px; margin: 28px 0; }
.answer strong { color: var(--white); }
.article h2 { font-family: var(--fd); font-size: clamp(22px,3.6vw,30px); font-weight: 700; color: var(--white); margin: 40px 0 14px; line-height: 1.2; letter-spacing: -0.01em; }
.article h3 { font-family: var(--fd); font-size: 19px; font-weight: 600; color: var(--white); margin: 26px 0 8px; }
.article p { font-size: 16.5px; color: var(--slate); margin-bottom: 16px; }
.article p strong { color: var(--white); }

/* reason cards */
.reasons { display: flex; flex-direction: column; gap: 14px; margin: 20px 0; }
.reason { display: flex; gap: 16px; align-items: flex-start; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px 22px; transition: transform .18s, border-color .18s; }
.reason:hover { transform: translateY(-2px); border-color: rgba(236,72,153,.4); }
.reason .num { flex-shrink: 0; width: 38px; height: 38px; border-radius: 10px; background: var(--grad-2); color: #fff; font-family: var(--fd); font-weight: 700; display: grid; place-items: center; }
.reason h3 { margin: 0 0 4px; font-size: 17px; }
.reason p { font-size: 14.5px; margin: 0; }

/* playlist */
.playlist { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; margin: 22px 0; }
.playlist h3 { margin-top: 0; display: flex; align-items: center; gap: 10px; }
.track { display: flex; align-items: center; gap: 14px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.track:last-child { border-bottom: 0; }
.track .tnum { font-family: var(--fd); font-weight: 700; color: var(--amber); width: 22px; font-size: 14px; }
.track .tname { font-weight: 600; color: var(--white); font-size: 15px; }
.track .tnote { margin-left: auto; font-size: 12px; color: var(--muted); }
.playlist-note { font-size: 13px; color: var(--muted); margin-top: 14px; line-height: 1.5; }

/* tips */
.tips { display: grid; grid-template-columns: 1fr; gap: 12px; margin: 18px 0; }
@media (min-width: 620px) { .tips { grid-template-columns: 1fr 1fr; } }
.tip { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.tip .ic { font-size: 22px; margin-bottom: 8px; }
.tip h4 { font-family: var(--fd); font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.tip p { font-size: 13.5px; color: var(--slate); margin: 0; line-height: 1.55; }

/* callout */
.callout { background: rgba(56,217,196,.1); border-left: 4px solid var(--cyan); border-radius: 0 12px 12px 0; padding: 16px 20px; margin: 22px 0; font-size: 15px; color: var(--slate); }
.callout strong { color: var(--white); display: block; margin-bottom: 4px; }

/* FAQ */
.faq { margin-top: 14px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px; }
.faq summary { cursor: pointer; padding: 18px 22px; font-family: var(--fd); font-weight: 600; font-size: 16px; color: var(--white); list-style: none; display: flex; justify-content: space-between; gap: 14px; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--pink); font-size: 22px; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .faq-a { padding: 0 22px 18px; color: var(--slate); font-size: 14.5px; line-height: 1.7; }

.disclaimer { background: var(--bg-2); border: 1px solid var(--line); border-radius: 14px; padding: 18px 22px; font-size: 13px; color: var(--muted); line-height: 1.6; margin-top: 32px; }
.disclaimer strong { color: var(--slate); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--bg-2); padding-block: 40px 28px; margin-top: 48px; text-align: center; }
.site-footer .brand { justify-content: center; margin-bottom: 12px; }
.site-footer p { font-size: 13px; color: var(--muted); max-width: 50ch; margin: 0 auto; line-height: 1.6; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }