/* SoulLink official site — shared styles (mobile first) */
:root {
  --bg: #0F0F14;
  --card: #1A1A22;
  --card-2: #22222C;
  --border: #2A2A36;
  --text: #F3F3F7;
  --muted: #9A9AAE;
  --rose: #FF7A8A;
  --blue: #7AA2FF;
  --amber: #FFC86B;
  --purple: #B58CFF;
  --radius: 18px;
  --max: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Roboto, sans-serif;
}

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

html { color-scheme: dark; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* Language toggle: without JS both languages show (English first). */
html[data-lang="en"] [lang="zh"],
html[data-lang="zh"] [lang="en"] { display: none !important; }

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1em; }
h1, h2, h3 { margin: 0 0 0.5em; line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: 2.1rem; font-weight: 700; }
h2 { font-size: 1.45rem; font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 600; }
ul, ol { padding-left: 1.3em; margin: 0 0 1em; }
li { margin-bottom: 0.35em; }
strong { color: var(--text); }
hr { border: 0; border-top: 1px solid var(--border); margin: 2rem 0; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 16px; }

.skip { position: absolute; left: -999px; top: 0; }
.skip:focus { left: 16px; top: 16px; background: var(--card); padding: 8px 12px; border-radius: 8px; z-index: 50; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(15, 15, 20, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap { display: flex; align-items: center; gap: 12px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 1.05rem; }
.brand img { width: 32px; height: 32px; }
.nav { display: none; gap: 20px; margin-left: 20px; color: var(--muted); font-size: 0.95rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.lang-toggle {
  display: inline-flex; align-items: center;
  border: 1px solid var(--border); border-radius: 999px; padding: 2px;
  font-size: 0.85rem; color: var(--muted); background: var(--card);
}
.lang-toggle button {
  appearance: none; border: 0; background: transparent; color: inherit;
  font: inherit; padding: 4px 10px; border-radius: 999px; cursor: pointer;
}
.lang-toggle button[aria-pressed="true"] { background: var(--card-2); color: var(--text); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: 0.98rem;
  border: 1px solid transparent; transition: transform .15s ease, opacity .15s ease;
  white-space: nowrap;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: linear-gradient(135deg, #FFB2AA, var(--rose)); color: #2A1218; }
.btn-primary:hover { opacity: 0.92; }
.btn-ghost { background: var(--card); border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--card-2); }
.btn-disabled { background: var(--card); border-color: var(--border); color: var(--muted); cursor: not-allowed; }
.btn-sm { padding: 8px 14px; font-size: 0.88rem; }
.btn-header { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 64px 0 40px; text-align: center;
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(60% 45% at 50% 0%, rgba(255, 122, 138, 0.28), transparent 70%),
    radial-gradient(35% 30% at 15% 60%, rgba(255, 200, 107, 0.14), transparent 70%),
    radial-gradient(35% 30% at 85% 55%, rgba(181, 140, 255, 0.14), transparent 70%);
}
.hero > .wrap { position: relative; z-index: 1; }
.hero .mark { width: 72px; height: 72px; margin: 0 auto 20px; filter: drop-shadow(0 0 24px rgba(255, 122, 138, 0.45)); }
.hero h1 { font-size: clamp(2.2rem, 7vw, 3.6rem); margin-bottom: 0.4em; }
.hero .lede { color: var(--muted); font-size: 1.08rem; max-width: 620px; margin: 0 auto 28px; }
.cta { display: flex; flex-direction: column; gap: 12px; align-items: center; }
.cta .btn { width: 100%; max-width: 320px; }
.hero .note { margin-top: 14px; color: var(--muted); font-size: 0.85rem; }

/* ---------- Sections ---------- */
.section { padding: 40px 0; }
.section-title { text-align: center; margin-bottom: 8px; }
.section-sub { text-align: center; color: var(--muted); max-width: 560px; margin: 0 auto 28px; }

.values { display: grid; gap: 14px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 20px; position: relative; overflow: hidden;
}
.card.glow::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 90px; pointer-events: none;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent, var(--rose)) 32%, transparent), transparent);
}
.card.glow { --accent: var(--rose); }
.card.glow.blue { --accent: var(--blue); }
.card.glow.amber { --accent: var(--amber); }
.card.glow.purple { --accent: var(--purple); }
.card > * { position: relative; }
.card .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent, var(--rose)); margin-bottom: 14px; box-shadow: 0 0 14px var(--accent, var(--rose)); }
.card h3 { margin-bottom: 0.35em; }
.card p { color: var(--muted); margin: 0; }

/* ---------- Character strip ---------- */
.strip {
  display: flex; gap: 14px; overflow-x: auto; padding: 8px 16px 18px; margin: 0 -16px;
  scroll-snap-type: x mandatory; scrollbar-width: none; -webkit-overflow-scrolling: touch;
}
.strip::-webkit-scrollbar { display: none; }
.char {
  flex: 0 0 132px; scroll-snap-align: start; text-align: center;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 10px 14px;
}
.char .ava {
  width: 84px; height: 84px; border-radius: 50%; margin: 0 auto 10px; overflow: hidden;
  border: 2px solid var(--accent, var(--rose));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent, var(--rose)) 18%, transparent);
  background: var(--card-2);
}
.char .ava img { width: 100%; height: 100%; object-fit: cover; }
.char.rose { --accent: var(--rose); }
.char.blue { --accent: var(--blue); }
.char.amber { --accent: var(--amber); }
.char.purple { --accent: var(--purple); }
.char .name { font-weight: 600; font-size: 0.98rem; display: block; }
.char .role { color: var(--muted); font-size: 0.78rem; line-height: 1.4; display: block; margin-top: 4px; }
.legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 18px; color: var(--muted); font-size: 0.85rem; margin-top: 4px; }
.legend > span::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; background: var(--accent); vertical-align: middle; }
.legend .rose { --accent: var(--rose); }
.legend .blue { --accent: var(--blue); }
.legend .amber { --accent: var(--amber); }
.legend .purple { --accent: var(--purple); }

/* ---------- Closing CTA ---------- */
.closing { text-align: center; padding: 30px 20px 36px; }
.closing p { color: var(--muted); max-width: 520px; margin: 0 auto 18px; }

/* ---------- Documents (privacy / terms / support) ---------- */
.doc { padding: 40px 0 60px; }
.doc .wrap { max-width: 760px; }
.doc header { margin-bottom: 28px; }
.doc header h1 { font-size: clamp(1.9rem, 5vw, 2.6rem); }
.doc .meta { color: var(--muted); font-size: 0.9rem; }
.doc h2 { margin-top: 2.2rem; padding-top: 1.2rem; border-top: 1px solid var(--border); font-size: 1.25rem; }
.doc h3 { margin-top: 1.4rem; }
.doc p, .doc li { color: #D3D3DE; }
.doc a { color: var(--blue); }
.doc a:hover { text-decoration: underline; }
.doc .callout {
  background: var(--card); border: 1px solid var(--border); border-radius: 14px;
  padding: 14px 16px; margin: 1.2rem 0; color: var(--muted); font-size: 0.95rem;
}
.doc table { width: 100%; border-collapse: collapse; margin: 0 0 1.2em; font-size: 0.95rem; }
.doc th, .doc td { text-align: left; padding: 10px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
.doc th { color: var(--muted); font-weight: 600; }
.doc td { color: #D3D3DE; }

/* Support page: contact cards + FAQ */
.contact-grid { display: grid; gap: 12px; margin: 1.2rem 0 0.5rem; }
.contact-grid .card p { color: var(--muted); }
.contact-grid .card .big { color: var(--text); font-size: 1.05rem; font-weight: 600; margin-bottom: 6px; }
details {
  background: var(--card); border: 1px solid var(--border); border-radius: 14px;
  padding: 0 16px; margin-bottom: 10px;
}
details summary { cursor: pointer; padding: 14px 0; font-weight: 600; list-style: none; position: relative; padding-right: 28px; }
details summary::-webkit-details-marker { display: none; }
details summary::after {
  content: "+"; position: absolute; right: 2px; top: 12px; color: var(--muted); font-size: 1.2rem; font-weight: 400;
}
details[open] summary::after { content: "–"; }
details .body { padding: 0 0 14px; color: #D3D3DE; }
details .body p:last-child { margin-bottom: 0; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 32px 0 40px; color: var(--muted); font-size: 0.9rem; }
.site-footer .wrap { display: flex; flex-direction: column; gap: 16px; }
.site-footer .wordmark { height: 28px; width: auto; opacity: 0.9; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.foot-links a:hover { color: var(--text); }
.site-footer .copy { font-size: 0.85rem; }

/* ---------- Desktop ---------- */
@media (min-width: 720px) {
  body { font-size: 17px; }
  .nav { display: flex; }
  .btn-header { display: inline-flex; }
  .hero { padding: 96px 0 56px; }
  .cta { flex-direction: row; justify-content: center; }
  .cta .btn { width: auto; min-width: 220px; }
  .section { padding: 56px 0; }
  .values { grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .card { padding: 26px 24px; }
  .strip {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; overflow: visible;
    padding: 8px 0 12px; margin: 0;
  }
  .char { flex: initial; padding: 22px 14px 18px; }
  .char .ava { width: 104px; height: 104px; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .site-footer .wrap { flex-direction: row; align-items: center; justify-content: space-between; }
  .doc { padding: 64px 0 80px; }
}

@media (min-width: 1000px) {
  .strip { grid-template-columns: repeat(8, 1fr); gap: 12px; }
  .char { padding: 20px 8px 16px; }
  .char .ava { width: 92px; height: 92px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}